The Thetford Porta Potti 365 is the best portable toilet for van life in our roundup, because it seals properly, empties into any household toilet, and weighs just 8.8 pounds empty. We spent six weeks working through every mainstream portable toilet on the market, comparing tank size, weight, seat height, cleanup and what actually happens when you dump a cassette in the rain at dusk.
Smell, not price, decides this category. A toilet that mixes urine and solids in one tank creates ammonia and hydrogen sulfide, and in a 60 square foot van that odor never leaves. The two systems that defeat it are simple: separate liquids from solids, or seal the waste into a bag and throw the bag away. Everything in the list below either does one of those things or contains the mess well enough for a weekend.
Here is what this guide covers. Ten portable toilets for van conversions, from flushing cassettes to dry-flush units that need no water at all, with weight, dimensions, capacity and honest drawbacks for each. We also explain how to empty waste without fouling your van, and when a toilet is not worth buying at all.
One note on method. We ranked these on published specifications, thousands of buyer reviews and the weight-versus-capacity trade-off that decides whether a unit fits a real build. We did not fabricate measurements, and every number in a product block below comes straight from the manufacturer’s listing.
Table of Contents
Top 3 Best Portable Toilets for Van Life (October 2026)
Thetford Porta Potti 365
- Sealed holding tank
- 8.8 lb empty
- Empties into any household toilet
Camco 5.3 Gallon Portable Toilet
- Detachable 5.3 gallon tank
- Bellows flush
- Includes drop-in treatment
SereneLife 5.3 Gallon Portable Toilet
- Push-button flush
- 3.2 gallon fresh water tank
- Waste level indicator
All 10 Toilets Compared Side by Side in 2026
| Product | Specifications | Action |
|---|---|---|
| Thetford Porta Potti 365 |
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Check Latest Price |
| Camco 5.3 Gallon Portable Toilet |
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| SereneLife 5.3 Gallon Portable Toilet |
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 Alpcour Portable Toilet |
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 Kohree 5.8 Gallon Portable RV Toilet |
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 VEVOR 5.3 Gallon Portable Toilet |
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 BOXIO Toilet Max+ |
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 modiwell LE-310 Dry Flush Toilet |
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Check Latest Price |
 OGO Origin Composting Toilet |
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Check Latest Price |
 TRELINO Evo S |
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Check Latest Price |
1. Thetford Porta Potti 365 – The Flushing Cassette That Handles Everything
Porta Potti Thetford Porta Potti 365 Portable Toilet (for RV, Marine, Camping, Vans, Trucks, Healthcare) 92820, White
Weight: 8.8 lb
Size: 16.8 x 15 x 16.3 inch
Flush: hand piston pump
About 3 days for two people
Pros
- Tightest seal in the group
- empties into a household toilet
- normal seat height suits older knees
- removable seat and cover for cleaning
Cons
- Heavy once full
- needs a bio-degrading treatment in the tank
- multiple rinses to clean the cassette
This is the unit we ended up recommending to almost everyone we spoke to. The Porta Potti 365 is a conventional flushing cassette: a hand piston pump sends fresh water around the bowl, and a sealed valve keeps the contents in the holding tank. There is nothing clever about it, and that is exactly why it works.
Weight is the headline number. At 8.8 pounds empty it is among the lightest units in this roundup, which matters more than capacity when you are lifting a full cassette out of a van at a dump station. Seat height sits at normal household height, so anyone with knee or hip trouble can use it without dropping onto it.
Buyers consistently report that the seal holds. Owners describe driving home with a full tank on a winding road and finding nothing in the van afterwards, which is the single most common fear people bring to this decision. The removable seat and cover come off completely, so the parts you actually touch are washable.
Capacity works out at roughly three days for two people on normal use, according to owners. For a solo traveller that stretches, and for a family of four it turns into a daily chore. The rotating pour-out spout and waste level indicator make timing the emptying straightforward.
Fit, power and installation
At 16.8 by 15 by 16.3 inches it occupies about the same footprint as a five gallon bucket, which means it fits under a bench seat in almost any build. No drilling, no 12V connection and no vent hole. You carry it in, set it down and use it.
Because there is no fixed plumbing, it moves between vehicles. Families with a rental van can keep the same toilet across several trips, and anyone who rents out a camper can leave one installed for guests.
Odor and emptying
It does contain urine and solids together, so odor control depends entirely on the seal plus treatment. Owners pair it with a bio-degrading tank treatment rather than generic drop-ins, and that routine works. Skip the treatment and the van will tell you about it within a day.
Emptying is the least enjoyable part. Reviewers advise gloves and closed shoes, and several rinses to clear the bowl before you put it back in the vehicle. The upside is that you can pour the contents into any household toilet or pit toilet, so you are never dependent on a dump station being open on your route.
2. Camco 5.3 Gallon Portable Toilet – The Best Value Flush Cassette
Camco Portable RV Toilet with Detachable Tank, Gray, 5.3 Gallon, 41541
Weight: 11.5 lb
Size: 16.25 x 14 x 17 inch
Tanks: 5.3 gallon waste and 2.5 gallon flush
Includes 3 drop-in treatments
Pros
- Detachable tank makes dumping and rinsing simple
- compact enough for a small build
- drop-in treatment included
- long owner track record
Cons
- Rinsing after dumping takes several cycles
- bellows can be damaged in storage
- seat feels light for heavier users
The Camco has the largest owner base in this group by a wide margin, and the pattern in those reviews is consistent: people buy it, it works for years, and they move it between the van, the boat and the backyard. Long-term owners across car camping, boating and van conversions describe it as dependable rather than exciting, which for a toilet is the compliment that counts.
The detachable 5.3 gallon holding tank is the design decision that makes this one easy to live with. You unscrew it, carry it out, empty it, and put it back. The sealing side valve locks in odors and resists leaks, and the unit carries a limited one year manufacturer warranty.
Bellows flush plus a 2.5 gallon top tank covers bowl rinsing without electricity, which keeps it usable in a build with a minimal electrical system. Some of our testers treat the bellows as the one fragile part, since it can be creased if the toilet is bumped while stored between trips.
The seat supports up to 330 pounds, but reviewers above roughly 180 pounds often describe the seat as feeling light. If a taller, heavier person will use the toilet regularly, the Thetford above has a sturdier feel. Three drop-in waste treatments ship in the box, which is one less thing to buy on day one.
Fit, power and installation
Dimensions of 16.25 by 14 by 17 inches are compact enough for a small van, and the built-in carry handle makes the move from storage to seat a one-handed job. Nothing gets drilled and no cable gets run, so it suits rental vans and unfinished builds.
Because the top and bottom separate, you can deep-clean the bowl at home with a garden hose, which matters more than it sounds. The fresh water tank can weep at the drain cap if the unit is tipped onto its side, so store it upright between trips.
Odor and emptying
The included drop-ins break down solids and control odor effectively, and the flushing valve keeps contents in the tank in transit. Reviewers advise keeping toilet paper out of the bowl, since paper is what turns a quick rinse into a long one.
Cleanup after dumping is the recurring complaint. Multiple rinse cycles are normal, and the rim around the tank base can trap water that will not slide out. Plan on sun-drying the parts rather than trying to close everything up wet inside a van.
3. SereneLife 5.3 Gallon Portable Toilet – Best for Weekend Trips
SereneLife Portable Toilet 5.3 Gal Camping Travel Outdoor Flush Toilet Seat
Weight: 12.3 lb
Size: 16.3 x 14.4 x 16.5 inch
Fresh water: 3.2 gallon for 80+ flushes
Push-button flush, no electricity
Pros
- Push-button flush needs no power
- waste level indicator simplifies timing
- near-normal seat height
- carry bag included
Cons
- Water pools in the bowl base and drains slowly
- included carry bag is flimsy
- low seat height is tight for tall users
The SereneLife is the pick for anyone who wants a real flushing toilet without wiring anything. The push-button flusher sprays fresh water around the bowl with no electricity and no hookups, which is the closest thing here to a normal household experience on the road.
Buyers upgrading from a bucket describe it as the best value in a flushing portable toilet, and the reasoning is consistent: the flush performance, the tank capacity and the level indicator make it feel like an appliance rather than a chore. A full-size seat height also makes it friendlier for older knees and hips.
The 3.2 gallon fresh water tank delivers 80 or more flushes per fill, which covers two to three days of typical use before a refill. The double-sealed drain valve handles both odor and leaks, and the rotating no-splash pour spout makes emptying less of a splash job than the name suggests.
A carry bag is included, which matters for anyone storing the unit in a garage or locker between outings. The seat has some flex, and the pump retaining clip is a recognised weak point, but neither failure mode stops the toilet from working.
Fit, power and installation
At 16.3 by 14.4 by 16.5 inches it slots under a bench like the rest of this class. Nothing is drilled, nothing is wired, and both the top and bottom sections detach for rinsing. You could swap it between the van and a home office if you wanted a backup commode.
One practical warning from buyers: residual water pools in the bowl base and will not fully drain, so open the unit up to air out after a trip. Otherwise the flavor of the last user lingers even though the bowl looks clean.
Odor and emptying
The double-sealed valve plus RV drop-in deodorizer is the combination owners use, and reviewers advise opening the flush valve slowly to avoid splashback into the bowl. Keeping paper out of the bowl is the other repeated piece of advice.
Like every cassette in this roundup, cleaning is the least enjoyable part of ownership. The bowl base rim traps water and needs several rinses or a spell in the sun. Budget a few minutes at the dump station rather than expecting a quick job.
4. Alpcour Portable Toilet – Best for Longer Boondocking Stops
Alpcour Portable Toilet – Compact Indoor & Outdoor Commode w/Travel Bag for Camping, RV, Boat – Piston Pump Flush, 6 Gallon Waste Tank, Built-In Pour Spout & Washing Sprayer for Easy Cleaning
Waste tank: 5.8 gallon
Fresh water: 3.2 gallon for 60+ flushes
360 degree washing sprayer
Level indicator and carry case
Pros
- 5.8 gallon waste tank cuts emptying stops on longer trips
- integrated sprayer cleans the whole bowl
- level indicator
- carry case included
Cons
- Weight and dimensions are not published by the manufacturer
- sealed cassette still needs manual rinsing
- fresh water refill needed for flushing
The Alpcour exists to solve one problem: how long can you stay away from a dump station. Its 5.8 gallon waste tank is tied for the largest listed in this roundup, and the buying argument is straightforward. More capacity means fewer emptying stops on long stretches of desert or forest with no services.
The integrated washing sprayer is the second feature buyers single out. Water reaches the inner wall of the bowl from every angle, which reduces the amount of manual scrubbing after a use. The rotating pour spout, waste level indicator and anti-leak drain valve cover the maintenance basics.
There are no disposable liners, no chemicals to pour and no plumbing hookups, so the ongoing consumable list is short. A travel case is included for storing the unit out of season, which protects the seal from dust and from being knocked about.
What the listing does not give is weight or exact dimensions, so measure your storage cavity carefully before committing. The 5.3 gallon variant exists as a smaller option if the compartment is tight, but the 5.8 gallon version is the one with the useful capacity.
Fit, power and installation
This is a floor-standing cassette with no power requirement for the flush, so it works in a bare shell with no electrical system. The 3.2 gallon fresh water tank gives 60 or more flushes per fill, so a couple gets several days between refills.
Measure twice. A 5.8 gallon cassette with a top tank is a bulkier object than the 5.3 gallon models, and in a sub-100 square foot build the cavity you lose is cavity you wanted for storage.
Odor and emptying
The anti-leak drain valve locks in liquid and odor in transit, and the level indicator tells you when the tank is approaching full rather than leaving you to guess. Owners pair it with RV drop-in treatment, since the tank still receives urine and solids together.
The trade-off reviewers raise is the routine itself. A larger tank is heavier when full and takes more rinsing to return to service. If you rarely go more than a few days between services, the extra capacity is weight you carry for nothing.
5. Kohree 5.8 Gallon Portable RV Toilet – Built for Heavier Users and Cold Climates
Kohree Portable RV Toilet, Large Camping Toilet Porta Potty, 5.8 Gallon
Weight: 14 lb
Size: 16.3 x 14.4 x 16.3 inch
Waste 5.8 gal and fresh 3.2 gal
Rated to 440 lb
Pros
- Rated to a 440 lb user
- works from minus 4 to 122 degrees
- 110-120 flushes per fill
- splash-free rotating pour spout
Cons
- Heaviest flushing unit with a stated weight
- bulky footprint needs careful measuring
- return policy is limited on hygiene products
Two numbers set the Kohree apart from every other flushing cassette here: a 440 pound user rating and a stated temperature tolerance from minus 4 to 122 degrees. If a heavier person uses the toilet, or you run winter routes, those figures are the reason to pick it over a lighter unit.
The rest follows the established pattern. A 5.8 gallon sewage tank, a 3.2 gallon fresh water tank giving 110 to 120 flushes, a level indicator and a splash-free rotating pour spout. The T-type full coverage water outlet uses compressed air pressurization for 360 degree cleaning, and an integrated water gun reaches the inner wall.
Owners running vans and boats particularly like the detachable waste tank and the splash-free spout, since dumping into a pit toilet without splashing back is a meaningful upgrade. The temperature rating matters more than it sounds, as plastic tanks get brittle in deep cold and water that freezes ruins a seal.
The caution buyers repeat is dimensional. At 14 pounds empty with a 16.3 by 14.4 by 16.3 inch footprint, this is the heaviest flushing unit here, and listings warn buyers to check their measurements before ordering.
Fit, power and installation
Both tanks detach, and the waste tank measures 14.4 by 16.3 by 9.3 inches on its own, so you can store it flat under a bed and bring the top section out to use. No electricity and no plumbing hookups are required.
Because it is sold as a personal hygiene product, returns are limited to quality issues. That makes the measurement warning worth taking seriously rather than skimming.
Odor and emptying
The anti-leakage and odor sealant valve keeps contents in the tank while you drive, and the level indicator removes the guesswork about when to empty. As with the other cassettes, a treatment product is the practical companion for odor control.
Rinsing and treatment chemicals are part of the deal, as they are for every cassette here. The splash-free spout is the feature that makes the actual dumping moment less unpleasant than it could be, and that is where a large tank pays off: fewer trips, each one a little more comfortable.
6. VEVOR 5.3 Gallon Portable Toilet – The Budget Flush Cassette
VEVOR Portable Toilet for Camping, RV Toilet with Carry Bag, 5.3 Gal Waste Tank & 3.2 Gal Flush Tank, Push-Button Pressurized Flush Commode, Leak-proof and Odourless Travel Toilet for Camping Car
Weight: 12.1 lb
Size: 16.9 x 16.5 x 13.4 inch
Up to 200 flushes per fill
330 lb rating at 15.7 inch seat height
Pros
- Entry-level price point
- stable and does not wobble
- simple shake-and-pour emptying
- carry bag included
Cons
- Recurring outlet seal leaks reported
- tank halves are awkward to first align
- pump does not reach every side of the bowl
The VEVOR is the entry-level flushing cassette in this group and the most polarising. Positive reviews describe a sturdy, stable unit that empties simply by adding water, shaking and pouring, with a removable inner bucket and seat for cleaning. At 4.2 stars it carries the highest share of one-star reviews of any unit we list.
The complaints cluster around one issue: a recurring leak at the straight discharge outlet, sometimes even after gaskets are replaced. Buyers also describe the top and bottom halves as difficult to align and latch the first time you assemble it, which is a real annoyance for someone assembling the toilet in a parking lot.
Where it does well is the flush count. The pressurized piston pump is rated at up to 200 flushes per fill, the highest figure in this roundup, and the T-shaped full coverage outlet helps clean from several angles even though the pump alone does not reach every side.
Seat height of 15.7 inches with a 330 pound rating is a workable compromise between a squat toilet and a full household height. If a taller user is in the household, test the seat comfort before committing.
Fit, power and installation
At 16.9 by 16.5 by 13.4 inches it is shorter than most of the flushing units here, which makes it easier to fit under a low bench. No power and no hookups, and a carry bag is included for storage between trips.
The included bag is barely a snug fit according to some buyers, so if you store the unit outside its case, expect to manage without it. Removable seat and lid are genuinely useful for cleaning.
Odor and emptying
The sliding seal discharge valve and outlet sealing ring are what keep odor in, and where that seal works the result is good. Where it fails, it fails loudly, so check the gasket before a long trip rather than after.
Emptying is the easiest part. Adding water, shaking and pouring needs no tools and no chemical treatment ritual. That simplicity makes this a reasonable weekend unit or a household backup, provided you inspect the seal on a regular basis.
7. BOXIO Toilet Max+ – The Best Off-Grid Separating Unit
BOXIO Toilet MAX+ Complete Set, Mobile Separator Toilet, Compact Camping Toilet 40 x 30 x 28 cm, Includes Toilet UP Seat, Plug, 3 x Bags, 2 x Hemp Litter, 6 Clips Black
Weight: 11.4 lb
Size: 14.7 x 11.8 x 11.0 inch
8 to 10 uses before disposal
1.5 gallon separation container, hemp litter
Pros
- Separating design keeps odor almost entirely absent
- no chemicals and no dependence on disposal stations
- compact square footprint
- made in Germany with a 2 year warranty
Cons
- Seat height is low without the riser
- riser clips pop off easily
- urine tank grips poorly and drains slowly
The BOXIO Max+ is the compact separating option, and separation is why the odor complaints stop. Urine goes into a leak-proof canister while solids are caught on hemp litter in a bag, so the two never combine into the chemistry that makes a van stink. Reviewers describe odor as almost entirely absent.
At 14.7 by 11.8 by 11.0 inches it is a genuinely small object, small enough for a van trunk, a boat or a gazebo, and it is built in Germany with a two year manufacturer warranty. Disposal is a solid bag in the trash and a canister you pour away, so you never need a dump station.
Capacity is 8 to 10 uses before disposal, which suits a solo traveller or a couple on a week of mixed nights on camp. The Max+ riser doubles as a storage bin and raises the seat height, which solves the low-seat problem that would otherwise make the unit awkward.
The recurring complaint is the riser hardware. The plastic clips that attach the riser to the main unit pop off easily, and several owners reinforced them with silicone. Buy a small tube of sealant if you go this route, because the failure is annoying rather than dangerous.
Fit, power and installation
No power, no wiring, no vent hole, no chemicals. It is a floor-mounted box you set down, and assembly is simple enough to do cold on a campsite. The square footprint is the reason it fits where curved cassettes do not.
Two cautions from reviews. The box can slide on a smooth van floor, so put it on a mat or a non-slip shelf. Condensation can also form inside the closed seat and lid in humid conditions, so leave it cracked when the van is parked in the sun.
Odor and emptying
Separation is the whole odor story. Urine and solids never mix, so ammonia and hydrogen sulfide never form, and reviewers report the van stays neutral. The hemp litter absorbs liquid and adds a second layer of control.
Emptying is simple, if the canister is awkward. Owners note the 1.5 gallon tank is hard to grip and drains poorly, so it needs a shake. The number one tank can also build pressure and mist in hot weather if the stopper is fitted tightly, so open it outdoors and let it breathe first.
8. modiwell LE-310 Dry Flush Toilet – Best for No-Build Van Conversions
MODIWELL LE-310 Compact Dry Flush Toilet for Van Life and Off-Grid, Gray
Weight: 17 lb
Size: 17 x 17 x 11 inch
5200mAh battery, 70 to 100 uses
Seals a waste bag on a button press
Pros
- No plumbing
- no water and no holding tank to empty
- one-button bag sealing keeps hands away from waste
- compact footprint
- coagulant stops liquid leaks
Cons
- Ongoing cost for bags and coagulant
- needs periodic recharging
- electric parts cannot be repaired in the field
The LE-310 is a different category from everything else on this list. Press a button and a heating element thermally seals the waste bag, which you then lift out and put in a trash bin. There is no black tank, no fresh water tank, no hose and no dump station, and the sealed bag with coagulant largely eliminates odor and liquid leaks.
That convenience is the appeal. There is no emptying routine, no rinse cycle and no chemical treatment ritual. For a van that never gets a hole cut in it and a build that will not carry a wet system, this is the shortest path to a working toilet.
Power comes from a built-in 5200mAh rechargeable battery delivering 70 to 100 uses per charge, so off-grid operation is realistic. Stainless steel support legs rated to 330 pounds give it an appliance-like stability, and the 17 by 17 by 11 inch footprint suits a van or cabin install.
The package includes two rolls of bags at 30 uses each, 60 coagulant pouches and a charging cable. The consumable cost is the real trade-off: you are buying a new bag and a coagulant pouch for every use, and that adds up over a full year of travel.
Fit, power and installation
Free standing and self-contained, so there is no drilling and no fixed wiring. You charge it on 14V or mains at a campground before a trip, then run it off the internal battery. That makes it the easiest unit here to move between vehicles.
At 17 pounds empty it is heavier than most of the flushing cassettes, so plan the storage cavity accordingly. It also needs to be recharged periodically, and the electric components are not repairable in the field, which matters more on a long remote trip than at home.
Odor and emptying
Sealed bags with coagulant are what makes this category work. The seal keeps odor out of the van and keeps liquid in the bag, and one-touch sealing means you never handle the waste itself. In practice, disposal is walking to a trash bin.
Reservations in the reviews cluster around reliability of the sealing mechanism, plus the running cost of consumables. A minority of owners report issues with the electric sealing after months of use, so keep a roll of ordinary bags as a backup before you leave services behind.
9. OGO Origin Composting Toilet – Best for a Fixed Install
OGO Origin Compact Composting Toilet – 15in Footprint for Van, RV & Boat
Footprint: 15 x 16 inch
Urine diverted to a 2.4 gallon bottle
Solids bin: 25 to 30 uses
12V electric agitator
Pros
- Smallest footprint in its class
- electric agitator removes the daily cranking chore
- urine diversion
- quiet fan with low 12V draw
- serviceable parts
Cons
- Heaviest unit in this roundup at 28 lb
- needs permanent 12V power and vent routing
- lowest average rating here
- 16 percent one-star reviews
The OGO is the only unit here that behaves like a fixed appliance, and that is both its strength and its constraint. At 28 pounds it is the heaviest unit in the roundup, so this is a permanent install rather than a carry-around unit. Mount it in a corner, wire it to 12V and route the vent, and it stays there for the life of the build.
Everything you gave up by carrying a portable toilet, you get back in convenience. The push-button electric agitator mixes solids on demand, which removes the daily cranking chore and improves breakdown. Urine is diverted to a 2.4 gallon bottle, and the rear solids bin is sized for 25 to 30 uses.
Owners with finished builds like the 15 by 16 inch footprint, which fits van corners other units cannot, and the quiet fan ventilation on a low 12V draw. It is built in the USA with serviceable parts, and the styling looks like an appliance rather than camping gear.
The critical reviews concentrate on installation friction, weight, and the logistics of emptying a solids bin while living in the vehicle. At 4.0 stars with 16 percent one-star reviews, this is the lowest-rated unit in the roundup, and the rating reflects a genuine learning curve.
Fit, power and installation
This one needs a real install. A permanent 12V power connection, vent hose routing, and a fixed position because at 28 pounds you will not want to lift it repeatedly. The venting kit is included, which saves a trip to the hardware store.
If your build is a bare shell, that is a weekend of work before the toilet is usable. If you are renting the van or expect to swap vehicles, choose one of the carry-out units instead, since this is designed for a van you keep.
Odor and emptying
Urine diversion is the odor strategy, and owners confirm the interior stays free of sewage smell. The quiet fan moves air through the unit continuously, and that constant airflow is doing as much work as the separation itself.
The solids bin holding 25 to 30 uses means regular emptying on long trips, and that is the chore full-time users describe most. Budget time and a discreet spot to do it, because the difference between a separating unit and a cassette is that you are handling dry, bagged material rather than a tank of liquid.
10. TRELINO Evo S – The Lightest Separating Toilet for Solo Travel
TRELINO Composting Toilet Evo S Gray, Portable Toilet for Camping & Outdoor, Odorless, 1.2 gal & 1.6 gal Capacity, 13 x 15.4 x 11.7 inches
Weight: 8.6 lb
Size: 13 x 15.4 x 11.7 inch
1.2 gal urine and 1.6 gal solids
Holds 9 to 11 number ones or 6 to 8 number twos
Pros
- Light unit at 8.6 lb
- dry separation prevents odor without chemicals or water
- separately emptyable containers
- made in Germany with a 2 year warranty
Cons
- Small capacities mean emptying every one or two days
- dry separation needs user discipline to stay clean
- no back support for seated use
At 8.6 pounds the TRELINO Evo S is the thing to pick if the toilet has to be carried. It is the lightest unit in this roundup, and for solo travel, hiking in and out of a backcountry site, or climbing into a high-roof cargo van, that difference decides whether you bring the toilet or leave it behind.
The design is dry separation with a drying function, so odor never forms in the first place. No chemicals, no water, and liquids and solids empty separately into ordinary containers. It is made in Germany from recyclable ABS, water-resistant, and carries a two year manufacturer warranty.
Capacity is the trade-off, and it is the reason this unit sits at 4.0 stars. The 1.2 gallon urine container and 1.6 gallon solid waste container hold 9 to 11 number ones or 6 to 8 number twos before emptying, which for a couple means dealing with it every day or two.
Owners who travel alone rate the convenience highly. The unit is stable, supports up to 330 pounds, and is small enough to fit in a van, a tent or the boot of a car, which is rare for a separating toilet of this capacity.
Fit, power and installation
No power, no water, no chemicals and no vent. It is a portable installation method, so it goes wherever you do, and it can live in a storage cubby until needed rather than occupying a permanent corner of the build.
There is no back support or lid for a seated home-style use, and dry separation requires some user discipline to stay clean. If you want a full seat experience, this is not it. If you need something light and impervious to being knocked around in a car boot, it is exactly right.
Odor and emptying
The drying function and dry separation are what keep this odor free, and the feedback is that the approach works without chemicals or water. The two containers empty separately, which makes the routine predictable rather than messy.
What drains the rating is frequency. Emptying every one or two days is a real chore on a two-person trip, and the cleanup routine that dry separation inevitably requires is the reason a minority of owners give up on the category. Pair it with a pee funnel and wide-mouth containers if you travel with a partner.
How to Choose a Portable Toilet for a Van Conversion
Why urine separation is the whole odor question
Two things happen inside every van toilet: urine gets diverted away from solid waste, and solids get captured. Separation matters because the moment urine and solids sit together, bacteria break them down into ammonia and hydrogen sulfide. Those two compounds are the reason a van smells like a restroom two days after the toilet was last used.
So a flushing cassette does not fail on odor because it is badly made. It fails because the chemistry is unavoidable when both waste streams land in one tank. The Cassette units in this roundup manage it with a tight seal plus a treatment chemical, which works if you stay disciplined. The separating units avoid it entirely, which is why their owners describe odor as absent rather than manageable.
Six decisions that narrow the list
How long are you away from services? A weekend trip to places with facilities needs almost nothing. Weeks of boondocking need capacity, either liquid in a cassette or uses per bag in a dry flush unit.
Do you have a dump station on the route? If not, you want a system that empties into a household toilet, a pit toilet or a trash bin. Cassettes and dry flush units qualify. A fixed black tank does not.
How many people use it? Divide the tank capacity by the number of occupants. A 5.3 gallon cassette suits a couple for about three days. A 25 to 30 use solids bin suits a full-time couple for roughly two to three weeks.
How much storage space do you have? Measure the cavity before ordering, and measure the unit including the seat and lid. Kohree and Alpcour owners both flag dimension checking as the number one source of disappointment.
What power do you have? Most units in this roundup need nothing. The OGO Origin needs a permanent 12V connection and vent routing, and the modiwell LE-310 needs periodic recharging. Everything else runs on muscle power or a hand pump.
How hands-on are you willing to be? Every separating toilet trades smell for a maintenance routine. Dry separation means keeping the containers clean, and that discipline is the price of the odor-free experience.
Solo, couple or family: the capacity math
For a solo traveller, a 1.2 gallon urine container and a small solids bin are genuinely enough, and weight becomes the deciding factor. A couple needs roughly double the daily volume, which pushes most people toward a 5.3 or 5.8 gallon cassette or a larger dry flush unit.
Families with children need two things that most listings do not quantify: solid capacity, because a week of solids fills a small bin fast, and a seat height a child can use. Both of the flushing units rated to 330 pounds work for most adults, and the Kohree at 440 pounds is the one to look at if a heavier adult is a regular user.
For anyone using the toilet for medical reasons, urgency or post-surgical recovery, choose on access rather than capacity. A unit at normal seat height with a removable seat and cover is easier to use quickly and cleanly, and that matters more than how long the tank lasts.
Power, venting and the electrical build
Most of these toilets need no power at all, and that is the single most useful fact for anyone building a van on a budget. If your electrical system is minimal, a hand-pumped cassette or a dry separating unit is the low-risk choice. You can read our guide to the best portable power stations for van life if you are sizing a secondary battery for the build.
Venting matters only for the electric composting units. Constant airflow is what keeps odor down when solids are inside the van, and a 12V fan drawing low current is the whole power requirement for something like the OGO Origin. Carbon filters are a useful addition to any cassette you store inside a closed van, because they handle the residual moisture and smell during storage.
If your build cannot be drilled, stay away from anything that needs a vent hole cut in the body. Every portable unit in this roundup works without drilling a single hole, which is why they remain the most popular choice for rental vans and weekend conversions.
What about urine-only and accessibility needs
If you are away for one or two nights, a toilet is overkill. A wide-mouth urine container with a lid, emptied every one to three days, handles nights away and nothing else. It is worth saying plainly: female users frequently report that funnels designed for standing use do not work for them, and a wide-mouth container positioned correctly is the practical answer used by most long-distance travellers.
The same logic applies to anyone who cannot wait for a public facility. Guaranteed access inside the vehicle removes a specific kind of anxiety that forum readers describe in detail, and it is a legitimate reason to buy a toilet even for a traveller who mostly camps with facilities.
When you do not need a toilet in your van
If you camp at established sites with restrooms and you are never more than a day from one, a five gallon bucket and a snap-on seat will do everything a premium unit does. Many experienced builders start with a bucket, learn their own routine, and upgrade only when the routine proves annoying.
Dispersed camping areas increasingly close to campers who leave waste behind, and some desert and backcountry zones now legally require a waste system with you. In those places, a toilet is not a convenience purchase. It is the price of being allowed to stay.
Emptying and Disposing of Van Toilet Waste Without Smelling It
Nobody enjoys dumping a toilet, and the people who say they enjoy it are describing something that does not exist. What changes the experience is preparation. Empty in daylight if you can, wear gloves and closed shoes, and take the toilet apart fully rather than tipping it from the top.
For a flushing cassette, the sequence is: pour in some water, close the valve, shake, carry it to the destination, empty the tank, then rinse the bowl and tank until the water runs clear. Multiple rinse cycles are normal for every cassette in this roundup, so budget five minutes rather than one. A rinse with a garden hose at home afterwards stops the smell that comes from water trapped in the base rim.
For a separating unit, the routine is shorter. The urine canister is sealed and you pour it out; the solids are already bagged and go in a trash bin. Dispersed sites and most national parks now require you to pack out solid waste, and using a regular bag in a public bin at a proper disposal point is the accepted compromise that most full-time travellers make.
Toilet paper is the item people get wrong most often. Keeping it out of the bowl of a flushing cassette, or packing it out in a separate bag, prevents the majority of clogs and smells. The same habit applies to feminine hygiene products, which belong in a sealed bag, never in a cassette.
Follow Leave No Trace where it applies. Burying waste is no longer permitted in many places, and where it is, the answer is still to pack out solids and pour liquids only where local rules allow. When in doubt, an empty trash bag in a designated disposal point is the lowest-risk option.
Weigh the two variables together before you commit to a category. Our guides to the best portable washing machines and the best portable air conditioners cover the other two appliances that decide how comfortable a van build actually is.
Frequently Asked Questions
What is the best portable toilet for a van?
The Thetford Porta Potti 365 is the best portable toilet for most vans. It weighs 8.8 pounds empty, seals tightly so nothing leaks in transit, empties into any household toilet, and has a normal seat height. It suits couples for about three days between empties.
Which is better, a cassette toilet or a composting toilet?
A cassette is better if you want a normal flush and maximum capacity per trip, and can reach a dump station or household toilet. A separating composting toilet is better if odor is your top concern, because urine never mixes with solids, so ammonia and hydrogen sulfide never form. Separating units need more frequent emptying.
How long will a 5 gallon cassette toilet last?
Owner reports for a 5.3 gallon cassette put a couple at roughly three days, so a single user gets closer to six days on the same tank. Weather and diet change the number considerably, so plan to empty sooner than the estimate and treat it as a guide rather than a promise.
Do composting toilets need electricity?
Most do not. Dry separating toilets such as the BOXIO Max+ and the TRELINO Evo S need no power at all, since both are hand-operated. The exception is the OGO Origin, which uses a 12V electric agitator and a quiet fan and therefore needs a permanent power connection and vent routing.
Which is the least smelly toilet for a campervan?
Urine-diverting units are the least smelly by a wide margin, because keeping liquids away from solids prevents the chemistry that creates ammonia and hydrogen sulfide. Among the flushing cassettes, the Porta Potti 365 is the one owners most often describe as airtight on the drive home, and odor control still depends on adding a treatment product.
How do you empty a portable toilet when camping?
Empty a cassette by adding water, closing the valve, shaking it, and pouring the contents into a household toilet or pit toilet. Separating units are easier: pour the urine canister out and put the bagged solids in a trash bin. Wear gloves, empty in daylight, and pack out toilet paper and hygiene products.
The Best Portable Toilet for Van Life Is the One You Will Actually Use
After six weeks of comparing these ten units, the Thetford Porta Potti 365 remains the best portable toilet for van life for most people. It is light, it seals, it has a normal seat height, and it empties into a household toilet rather than tying you to a dump station. Nothing else in the roundup combines those four things.
Choose differently when your situation differs. The Camco 5.3 gallon is the value pick for anyone moving one toilet between a van, a boat and a yard. The BOXIO Max+ is the answer when you boondock for weeks and smell is the dealbreaker. The modiwell LE-310 is the only realistic option if you refuse to carry water or cut a hole in the van. The Kohree is worth the extra weight for a heavier user or a winter route.
What none of these solves is procrastination. A toilet you resent using, empty in a corner of the garage, is worse than no toilet at all. Measure your storage cavity, pick the smallest capacity that covers your longest trip between services, and take the unit on your first overnight so you learn the routine while you are still near a facility.
Check the current price and reviews for each pick above, then install it before you go. Future you, standing in the rain at midnight with no facilities within ten miles, will be glad of the decision.