The Best Composting Toilets for RVs and Camper Vans in 2026
If you are outfitting an RV, converting a Sprinter van, or building out a skoolie, you are intimately familiar with the dreaded “black tank.” In traditional RV setups, all toilet waste flushes into a large...
If you are outfitting an RV, converting a Sprinter van, or building out a skoolie, you are intimately familiar with the dreaded “black tank.”
In traditional RV setups, all toilet waste flushes into a large holding tank under the vehicle. This tank is heavy, it requires harsh chemicals to prevent it from smelling like a sewer, and most importantly, it tethers you to RV parks. You can only camp off-grid for as long as your black tank has capacity before you have to hunt down a dump station.
This is why composting toilets have revolutionized the vanlife and RV movement. By eliminating the black tank entirely, you save massive amounts of water, free up critical under-vehicle space, and gain the ability to boondock indefinitely.
But which composting toilet is right for a moving vehicle? In this guide, we break down the top models specifically designed for the unique space and power constraints of RVs and camper vans.
1. The Undisputed King: Nature’s Head
Best For: Overall durability, reliability, and full-time vanlifers.
Price: ~$1,030
It is impossible to talk about RV composting toilets without starting with the Nature’s Head. Designed originally by two sailors for use on rough ocean waters, it is built like an absolute tank and is the most popular composting toilet in the vanlife community.
Why it works for RVs:
- Completely Self-Contained: It requires no external holding tanks. Urine goes into a 2.2-gallon bottle in the front; solids go into a peat moss-filled bin in the back.
- Spider Handle Agitator: After you use the solid bin, you turn a handle on the side. This mixes the fresh waste into the compost, burying it instantly and preventing odors.
- The “RV Footprint”: It was designed to fit into incredibly tight spaces, making it perfect for van wet-baths.
- 12V Fan: It includes a tiny, ultra-low-draw 12v fan that vents through a hose to the outside of your van, ensuring your tiny living space never smells.
The Downside: Emptying the solid bin is a bit cumbersome. You have to remove the liquid bottle, unlatch the top half of the toilet, lift it off, and then take the entire heavy bottom base outside to dump into a trash bag. In a tight van, this requires some acrobatics.
2. The Premium Alternative: OGO Composting Toilet
Best For: Those who want modern aesthetics, power agitation, and a smaller footprint.
Price: ~$1,195
The OGO is a relatively new player in the market, but it has quickly gained a massive following because it specifically addresses the minor annoyances of the Nature’s Head.
Why it works for RVs:
- Electric Agitator: Instead of turning a manual crank handle on the side (which requires extra clearance space in a tight RV bathroom), the OGO features a motorized agitator. You push a button, and the toilet mixes the compost for you.
- Incredible Aesthetics: Let’s be honest, the Nature’s Head looks like industrial machinery. The OGO looks like a sleek, modern, premium appliance.
- Smaller Footprint: It is physically smaller than the Nature’s Head, making it the perfect choice for ultra-tight Sprinter van conversions.
- Urine Sensor: It features a built-in sensor and red LED light that tells you when the urine bottle is getting full, preventing disastrous overflows.
The Downside: Because it uses an electric motor to turn the compost, it draws slightly more power than a manual toilet. It also has more moving parts, meaning there is a slightly higher chance of mechanical failure over years of bumpy road travel.
3. The Flush-Alike: Separett Tiny
Best For: People who hate looking at compost and want a toilet that feels like home.
Price: ~$1,000
Separett is a Swedish company famous for their high-end residential composting toilets (the Villa). Recently, they released the “Tiny,” which was designed specifically for the European camper van market.
Why it works for RVs:
- The Concealing Flap: The biggest complaint about the Nature’s Head is that you have to look down at your compost. The Separett Tiny features a brilliant concealing flap. When you sit down, the flap automatically opens. When you stand up, it closes. You never see the waste.
- Easy Emptying: Unlike the Nature’s Head which requires you to carry the entire heavy base outside, the Separett uses a compostable bag system. You simply open the top, pull out the sealed bag, and throw it in a dumpster.
- No Agitator Needed: Because you are bagging the waste rather than actively composting it inside the unit, there is no crank handle and no mixing required.
The Downside: It is technically a “desiccating” toilet, not a true composting toilet. Because there is no peat moss and no agitation, the waste does not turn into soil inside the toilet; it just dries out. You are ultimately throwing bags of dried waste into the trash.
4. The Extreme Budget Option: The DIY Bucket System
Best For: Weekend warriors, DIYers, and extreme budget builds.
Price: ~$50 – $100
If you are converting a van on a shoestring budget, you do not need to spend $1,000 to get rid of your black tank. You can build a urine-diverting toilet yourself.
Why it works for RVs:
- Cost: You can buy a standalone urine diverter (like the Johnny Compost diverter) for about $60, attach it to a plywood box, and route it to a jug. Solids drop into a standard 5-gallon bucket lined with a bag.
- Custom Fit: You can build the wooden box to fit the exact, weird dimensions of your specific van build.
The Downside: It looks like a bucket in a box. You also have to manually scoop sawdust or coco coir over your waste after every single use to prevent odors, and you won’t have an active exhaust fan (unless you wire one yourself).
Conclusion: Ditch the Black Tank
Choosing the right composting toilet for your RV comes down to your budget and your tolerance for maintenance.
If you want the most robust, proven, true-composting off-grid toilet in existence, the Nature’s Head is the undisputed champion. If you want modern aesthetics and push-button convenience, go with the OGO. And if you want the familiarity of a traditional toilet with zero mess during emptying, the Separett Tiny is your best bet.
Whichever you choose, the freedom of never having to wait in line at a disgusting RV dump station again is worth every penny.
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