Choosing the best composting toilets depends on your specific needs, whether for off-grid living, RV use, or tiny homes. The Separett Villa stands out as the best overall for its efficient urine separation and odor control, while the Nature’s Head models excel for durability and ease of maintenance. Portable options like the NOMAD by OGO are ideal for outdoor adventures but may sacrifice comfort or capacity. Tradeoffs often involve balancing capacity, ease of use, and installation requirements. Keep reading for a detailed breakdown of these top picks and what to consider before buying.
Complete the kit
Key Takeaways
- The top-ranking toilets balance odor control, ease of maintenance, and capacity suitable for their intended use.
- Urine separation features are common among the best models, significantly reducing odors and simplifying composting.
- Portable toilets tend to prioritize lightweight design and compactness but often have smaller waste capacity.
- Build quality and ease of cleaning are critical for long-term satisfaction, especially in off-grid or frequent-use scenarios.
- Price varies widely, with premium models offering advanced features but not always necessary for casual or temporary setups.
| Separett Tiny Self-Contained Urine-Separating Compost Toilet |  | Best Overall for Small Spaces and Versatility | Capacity (Urine Container): 2 gallons | Design: Waterless, composting, urine-separating | Ventilation: Built-in fan | VIEW LATEST PRICE | See Our Full Breakdown |
| Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design |  | Best for Large Capacity and Low Maintenance | Capacity: Large | Warranty: 5 years | Odor Control: No odor | VIEW LATEST PRICE | See Our Full Breakdown |
| NOMAD by OGO Portable Compost Toilet for Camping and Outdoor Use |  | Best for Rugged Outdoor Adventures | Capacity: 8 gallons | Material: Rugged materials | Made in: USA | VIEW LATEST PRICE | See Our Full Breakdown |
| Thinktank Composting Toilet, White |  | Best for Ease of Use and Hygiene | Color: White | Type: Composting Toilet | Special Features: Urine diverting, airtight, separate air intake and exhaust, waste in a bag | VIEW LATEST PRICE | See Our Full Breakdown |
| OGO Origin Composting Toilet – 12V Electric Agitator, Urine Diverting RV Toilet for Van Life, Tiny Home & Boat – 15″ Compact, Odorless Off-Grid Toilet |  | Best for Modern Off-Grid Living and Convenience | Dimensions: 15″ x 16″ | Urine Capacity: 2.4 gallons | Uses per Full Tank: 25–30 | VIEW LATEST PRICE | See Our Full Breakdown |
| Nature’s Head Structure Kit with Composting Toilet – All-Inclusive, Waterless, Self-Contained System for Off-Grid Living |  | Best Overall | Includes: Toilet, vent, installation kit, coco coir | Power: 110V AC adapter | Capacity: 2.2-gallon urine tank, 60-80 solid uses | VIEW LATEST PRICE | See Our Full Breakdown |
| Nature’s Head Vehicle Kit with Composting Toilet – All-Inclusive, Waterless RV & Van Life System with Shell Vent and Coco Coir |  | Best for Mobile Off-Grid Living | Capacity: Supports 60–80 uses for solids, 2.2 gallons for urine | Includes: Composting toilet, Shell Vent, installation kit, 9L coco coir | Waterless: Yes | VIEW LATEST PRICE | See Our Full Breakdown |
| Separett Villa Urine-Separating Compost Toilet |  | Best for Water Conservation & Extended Use | Type: Urine-Separating Compost Toilet | Operation: Waterless | Capacity: High-capacity | VIEW LATEST PRICE | See Our Full Breakdown |
| Nature’s Head Vehicle Kit with Composting Toilet – All-Inclusive, Waterless RV & Van Life System with Spider Handle |  | Best for Van Life & Overlanding Enthusiasts | Capacity (solids): 60–80 uses | Capacity (urine): 2.2 gallons | Ventilation: Built-in 12V fan | VIEW LATEST PRICE | See Our Full Breakdown |
| composting toilet | Material | Capacity |
|---|---|---|
| Separett Tiny Self-Contained U | Biodegradable bags for solids | — |
| Nature’s Head Self Contained C | — | Large |
| NOMAD by OGO Portable Compost | Rugged materials | 8 gallons |
| Thinktank Composting Toilet | — | — |
| OGO Origin Composting Toilet | Polypropylene | — |
| Nature’s Head Structure Kit wi | Marine-grade construction | 2.2-gallon urine tank, 60-80 solid uses |
| Nature’s Head Vehicle Kit with | Marine-grade construction | Supports 60–80 uses for solids, 2.2 gallons for urine |
| Separett Villa Urine-Separatin | — | High-capacity |
| Nature’s Head Vehicle Kit with | Marine-grade construction | — |
More Details on Our Top Picks
Separett Tiny Self-Contained Urine-Separating Compost Toilet
The Separett Tiny stands out for its compact, space-efficient design ideal for tiny homes, RVs, and boats. Its urine separation system effectively controls odor, especially compared to the Thinktank, which relies on a more traditional waste bag setup. The built-in fan and biodegradable bags make waste management straightforward, though it requires manual emptying of containers, which can be less convenient for frequent use. Compared with larger models like Nature’s Head, it sacrifices capacity for size, making it less suited for multiple users or long-term off-grid stays. Its durable construction and spare parts availability add to its appeal, but the initial cost is higher than simpler composting options. This pick makes the most sense for those needing a space-saving, odor-free solution in small, mobile setups.
Pros:- Compact and space-efficient design
- Odor control with ventilation fan
- Easy to dispose of waste with removable containers
- Durable construction with spare parts available
Cons:- Requires manual emptying of containers
- Higher cost compared to traditional toilets
Best for: Individuals or small households needing a space-efficient, odorless composting toilet for limited areas like RVs or tiny homes.
Not ideal for: Large families or users with high waste volume, as its limited capacity requires frequent emptying and might become inconvenient.
- Capacity (Urine Container):2 gallons
- Design:Waterless, composting, urine-separating
- Ventilation:Built-in fan
- Material:Biodegradable bags for solids
- Country of Design:Sweden
- Sensor:Urine container emptying alert
Our verdict“This toilet is perfect for those prioritizing space-saving, odorless operation in small living or mobile environments.”
Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
The Nature’s Head excels in offering a large capacity suitable for two people, making it ideal for extended off-grid stays. Its design simplifies maintenance, with no odor and an easy-to-empty composting chamber, setting it apart from the Separett Tiny that focuses on small-space convenience. Compared to the Thinktank, it provides more capacity and less frequent emptying, though it might require more space and initial setup effort. The 5-year warranty adds a layer of reliability, appealing to those who prioritize durability. However, its size and weight make it less suitable for very tight or mobile setups. Overall, this model makes sense for households seeking long-term off-grid solutions with minimal upkeep and ample capacity.
Pros:- No odor, low maintenance
- Large capacity suitable for two users
- Easy to install and empty
- 5-year warranty for peace of mind
Cons:- Relatively bulky for small spaces
- No specific cons mentioned
Best for: Off-grid dwellers or small families needing a reliable, large-capacity compost toilet with minimal fuss.
Not ideal for: Users with very limited space or those seeking a lightweight, portable option for frequent transport.
- Capacity:Large
- Warranty:5 years
- Odor Control:No odor
- Installation:Easy to install
- Maintenance:No maintenance
Our verdict“This toilet is best suited for those prioritizing capacity and low maintenance over portability or space-saving features.”
NOMAD by OGO Portable Compost Toilet for Camping and Outdoor Use
The NOMAD by OGO is designed specifically for outdoor enthusiasts, with its rugged build and portability making it ideal for camping, boating, or remote locations. Its 8-gallon capacity and waterless, odor-free operation set it apart from smaller, indoor-focused models like Thinktank. Unlike traditional portable toilets that use chemicals, this unit uses widely available 8-gallon bags for easy cleanup, though you need to purchase these separately, adding to ongoing costs. Its lightweight design makes it easy to carry and use anywhere, but its limited capacity means frequent emptying during extended trips. Compared to the OGO Origin, it lacks electric features but offers a straightforward, eco-friendly solution for off-grid outdoor use. This makes it perfect for those who want a durable, chemical-free toilet for remote adventures.
Pros:- Odor-free and environmentally friendly
- No electric or plumbing needed
- Lightweight and portable
- Compatible with widely available 8-gallon bags
Cons:- Requires purchasing compatible bags separately
- Limited capacity for extended use without emptying
- May need additional composting medium for use
Best for: Backcountry campers, boaters, or remote explorers needing a portable, odorless toilet with high capacity.
Not ideal for: Users seeking a low-maintenance, electric-powered setup or long-term off-grid living solutions.
- Capacity:8 gallons
- Material:Rugged materials
- Made in:USA
- Features:Waterless, odor-free, no electric or plumbing required
Our verdict“This outdoor-focused toilet is ideal for adventure seekers who prioritize durability, portability, and chemical-free operation.”
Thinktank Composting Toilet, White
The Thinktank offers a user-friendly design with separate air intake and exhaust, making odor control straightforward and reliable, especially compared to the Separett Tiny, which relies more heavily on ventilation and urine separation. Its waste bag system with a patented trap door minimizes waste exposure, enhancing hygiene and ease of cleaning. The airtight construction and massive airflow provide a quiet, odorless experience, appealing for those prioritizing comfort. However, the need for regular waste bag replacement and potential bulkiness make it less suited for small or mobile spaces. Its specific installation requirements could also be a hurdle for some users. Overall, this model makes sense for those seeking an easy-to-maintain, hygienic composting solution in larger or more permanent setups.
Pros:- Odorless operation with massive airflow
- Hygienic waste containment system
- Easy to clean with no messy bowls
- Designed for user comfort
Cons:- Requires waste bag replacement
- May be bulky for small spaces
Best for: Homeowners or facilities wanting a hygienic, odorless composting toilet that’s simple to clean and maintain.
Not ideal for: Tiny homes or mobile setups where space is limited or frequent bag replacement is inconvenient.
- Color:White
- Type:Composting Toilet
- Special Features:Urine diverting, airtight, separate air intake and exhaust, waste in a bag
Our verdict“This toilet is best for those seeking a hygienic, easy-to-clean composting option in larger or fixed locations.”
OGO Origin Composting Toilet – 12V Electric Agitator, Urine Diverting RV Toilet for Van Life, Tiny Home & Boat – 15″ Compact, Odorless Off-Grid Toilet
The OGO Origin combines a sleek, compact design with modern features like an electric agitator, making waste mixing effortless compared to manual models like Nature’s Head. Its urine-diverting system helps prevent black tank odors, a common issue with traditional RV toilets, and the 12V power requirement ensures reliable operation in off-grid settings. While its size fits snugly into tiny homes, vans, and boats, the need for a 12V power source and the higher price point may deter budget-conscious buyers. The limited capacity of about 25–30 uses per full tank means frequent emptying for active users. Compared with manual options, this model offers convenience but at a higher cost and dependency on electrical power. It’s best for those who want a high-tech, odorless toilet that minimizes manual effort in tight spaces.
Pros:- Compact size fits tight spaces
- Electric agitator simplifies waste mixing
- Urine-diverting reduces odors
- Modern Scandinavian-style design
Cons:- Requires 12V power source
- Limited capacity necessitates frequent emptying
- Higher price compared to manual units
Best for: Van dwellers, tiny home residents, or boat owners wanting a compact, electric-powered, odor-free toilet with minimal maintenance.
Not ideal for: Users without reliable 12V power or those seeking a very low-cost, simple portable option.
- Dimensions:15″ x 16″
- Urine Capacity:2.4 gallons
- Uses per Full Tank:25–30
- Power:12V
- Material:Polypropylene
Our verdict“This toilet is ideal for modern off-grid dwellers seeking a low-maintenance, odorless, and efficient solution with electric convenience.”
Nature’s Head Structure Kit with Composting Toilet – All-Inclusive, Waterless, Self-Contained System for Off-Grid Living
This kit stands out for offering a complete, self-contained composting system tailored for off-grid settings like tiny homes and cabins. Compared with the vehicle-specific models, it provides a larger capacity and more durable marine-grade construction, making it ideal for stationary use. Its all-in-one design simplifies installation, and the waterless operation eliminates plumbing needs, reducing setup complexity. However, the need for manual emptying of both urine and solid tanks can be a drawback for those seeking low-maintenance solutions. The system’s robust build and extended capacity make it a strong competitor for permanent off-grid setups, though regular maintenance for odor control remains necessary. This pick makes the most sense for those prioritizing durability, capacity, and a straightforward waterless design for stationary off-grid living.
Pros:- Complete all-in-one kit for straightforward installation
- Waterless and chemical-free operation reduces complexity
- Marine-grade construction offers durability for outdoor settings
- Large capacity supports extended use between emptying
Cons:- Requires manual emptying of urine and solids tanks
- Regular maintenance needed for odor control
Best for: Off-grid homeowners and tiny home dwellers seeking a durable, large-capacity, all-in-one system with minimal plumbing.
Not ideal for: People who prefer low-touch maintenance or plan frequent, small use sessions, as manual tank emptying can be inconvenient.
- Includes:Toilet, vent, installation kit, coco coir
- Power:110V AC adapter
- Capacity:2.2-gallon urine tank, 60-80 solid uses
- Dimensions:Not specified
- Material:Marine-grade construction
- Design:Spider handle agitator
Our verdict“This system suits those needing a durable, high-capacity composting toilet for permanent off-grid living, accepting some manual maintenance.”
Nature’s Head Vehicle Kit with Composting Toilet – All-Inclusive, Waterless RV & Van Life System with Shell Vent and Coco Coir
This vehicle kit excels in supporting extended van or RV adventures with its self-contained, waterless design and included venting system. Unlike the stationary model, it is optimized for mobile environments, boasting a large capacity that reduces the frequency of emptying trips—up to 60-80 uses for solids and 2.2 gallons for urine. The integrated vent ensures a dry, odorless experience during travel, which is a significant advantage over simpler, non-vented systems. The main tradeoff involves installation complexity—some technical skill is recommended—and periodic vent maintenance. Compared to the all-in-one Nature’s Head Structure Kit, this model prioritizes mobility, making it ideal for overlanders. It’s perfect for those who need a durable, off-grid toilet that can handle extended use in a confined space without plumbing.
Pros:- Complete all-in-one kit designed for mobile living
- Supports extended use with high capacity for solids and liquids
- Includes a vent system to maintain dryness and odor control
- Waterless operation ideal for off-grid travel
Cons:- Installation may be technically demanding
- Vent system requires periodic maintenance
Best for: Van lifers and RV travelers seeking a reliable, large-capacity composting toilet designed specifically for mobile use.
Not ideal for: Individuals who prefer quick setup or minimal maintenance, as installation and vent upkeep require some technical know-how.
- Capacity:Supports 60–80 uses for solids, 2.2 gallons for urine
- Includes:Composting toilet, Shell Vent, installation kit, 9L coco coir
- Waterless:Yes
- Suitable for:RVs, vans, campers, skoolies
- Material:Marine-grade construction
- Made in:USA
Our verdict“This pick is perfect for mobile adventurers who need a durable, high-capacity composting toilet tailored for extended off-grid use.”
Separett Villa Urine-Separating Compost Toilet
The Separett Villa distinguishes itself through urine-diverting technology that conserves water and reduces odors, making it ideal for remote or off-grid settings. Its high-capacity design supports longer intervals between emptying—especially beneficial compared to smaller, portable options like the NOMAD by OGO, which require more frequent maintenance. The absence of chemicals and the need for no mixing make it a low-maintenance choice, but its installation is more suited to those with some plumbing skills, and it’s less appropriate for conventional household bathrooms. This model offers a significant advantage over water-dependent systems, but it’s best suited for users who can adapt to its urine-diverting setup and are committed to regular maintenance. It makes a compelling choice for eco-conscious users prioritizing water savings and high capacity.
Pros:- Waterless operation conserves water resources
- High-capacity design reduces frequency of emptying
- No chemical additives needed
- Versatile installation options
Cons:- Primarily suited for off-grid or specialized use
- Requires adaptation for standard plumbing setups
Best for: Remote cabin owners or off-grid users wanting a long-lasting, low-maintenance urine-diverting system that minimizes water use.
Not ideal for: Urban dwellers or those unfamiliar with urine-separating technology, as it may require adaptation and specific installation skills.
- Type:Urine-Separating Compost Toilet
- Operation:Waterless
- Capacity:High-capacity
- Installation:Versatile
- Maintenance:Low
Our verdict“This toilet is best for eco-conscious, off-grid users seeking a high-capacity, low-maintenance urine-separating system with water savings.”
Nature’s Head Vehicle Kit with Composting Toilet – All-Inclusive, Waterless RV & Van Life System with Spider Handle
This model adapts the core Nature’s Head design for travelers, emphasizing durability and extended capacity for mobile use. Its marine-grade construction and included venting system make it well-suited for van dwellers and overlanders who need dependable, odorless operation without plumbing. The large capacity tanks support 60–80 uses for solids and 2.2 gallons for urine, reducing the frequency of emptying—especially useful during long trips. While it offers a straightforward setup, proper installation is essential to maintain odor control, and the urine tank may need frequent emptying depending on usage intensity. Compared to the Structure Kit, this pick prioritizes portability and ruggedness for overland adventures, with the added benefit of a built-in vent fan. It’s ideal for mobile users who value durability and extended use between emptying cycles.
Pros:- Waterless and off-grid ready for mobile use
- Large capacity supports extended use between emptying
- Marine-grade construction withstands rugged environments
- Includes venting system for odor mitigation
Cons:- Proper installation is necessary to prevent odors
- Urine tank may require frequent emptying in high usage
Best for: Overlanders, van lifers, and adventurers needing a reliable, durable composting toilet designed for extended travel without plumbing.
Not ideal for: Casual users or those seeking a quick, low-maintenance solution, as installation and vent management are critical for odor control.
- Capacity (solids):60–80 uses
- Capacity (urine):2.2 gallons
- Ventilation:Built-in 12V fan
- Material:Marine-grade construction
- Includes:Shell Vent, installation kit, coco coir
- Made in:USA
Our verdict“This toilet excels for mobile users needing a tough, high-capacity system with odor control for extended overland trips.”
How We Picked
Our evaluation focused on performance, durability, ease of use, maintenance, and value. We analyzed user reviews, product specifications, and expert insights to identify models that excel in odor control, capacity, installation flexibility, and environmental impact. Ranking was influenced by how well each toilet balances these factors for different use cases, ensuring that each option appeals to specific buyer needs. We prioritized products that demonstrate consistent quality and innovative features to provide a comprehensive overview for various lifestyles and budgets.| composting toilet | Material |
|---|---|
| Separett Tiny Self-Contained U | Biodegradable bags for solids |
| Nature’s Head Self Contained C | — |
| NOMAD by OGO Portable Compost | Rugged materials |
| Thinktank Composting Toilet | — |
| OGO Origin Composting Toilet | Polypropylene |
| Nature’s Head Structure Kit wi | Marine-grade construction |
| Nature’s Head Vehicle Kit with | Marine-grade construction |
| Separett Villa Urine-Separatin | — |
| Nature’s Head Vehicle Kit with | Marine-grade construction |
Factors to Consider When Choosing Best Composting Toilets
When selecting a composting toilet, understanding your primary needs is essential. Key factors include capacity, ease of maintenance, odor management, and installation type. Recognizing the tradeoffs involved—such as size versus capacity or portability versus durability—can help you make a more informed choice. This guide aims to clarify these considerations to match you with the best model for your situation.Capacity and Usage Frequency
Consider how often you’ll use the toilet and for how many people. Larger capacity models are better suited for permanent setups with frequent use, reducing the need for maintenance. Smaller, portable units are ideal for occasional outdoor trips or tiny homes where space is limited. Overestimating capacity can lead to unnecessary bulk, while underestimating may cause inconvenience and more frequent emptying.
Ease of Maintenance and Cleaning
Ease of cleaning is vital for maintaining odor control and hygiene. Look for models with removable composting chambers and accessible mechanisms. Some toilets feature self-contained units that simplify waste removal, while others may require disassembly. Consider how much effort you’re willing to invest regularly, especially if you plan to use the toilet long-term.
Odor Control and Ventilation
Effective odor management is a key factor, particularly in enclosed spaces like tiny homes or RVs. Urine-separating models tend to produce less smell, but proper ventilation is also crucial. Some toilets include built-in fans or vent kits, which can significantly reduce odors and improve air quality. Failing to address ventilation can lead to unpleasant smells and reduced comfort.
Installation and Portability
Decide whether you need a permanent, built-in setup or a portable solution. Permanent models often require more complex installation but provide greater capacity and stability. Portable units are designed for quick setup and mobility, ideal for camping or temporary use, though they may be less comfortable for long-term daily use. Be mindful of space constraints and ease of setup when making your choice.
Environmental Impact and Cost
Quality composting toilets can reduce water use and minimize environmental footprint. However, higher-end models with advanced features tend to come at a premium. Consider your budget against the long-term savings on water and waste disposal. Cheaper options may save money upfront but could incur higher maintenance costs or less efficient composting, affecting sustainability.
Frequently Asked Questions
How often do I need to empty a composting toilet?
The frequency of emptying depends on the model, capacity, and usage. Most composting toilets require emptying every few weeks for moderate use, but larger units or less frequent use can extend that to several months. Always follow the manufacturer’s guidelines for maintenance, and consider your space and convenience when choosing a model with an appropriate capacity.
Are composting toilets suitable for all climates?
Many composting toilets are designed to work in various climates, but colder temperatures can slow composting and increase odor issues. Some models include insulation or heating options to improve performance in winter. In extremely cold environments, additional measures such as heated ventilation may be necessary to maintain proper operation.
Do I need special composting knowledge to use these toilets?
While composting toilets are generally straightforward, some basic knowledge about managing moisture levels, adding bulking agents, and maintaining proper airflow can improve their efficiency. Most models come with instructions, but a little research beforehand can help ensure proper usage and odor control, especially for first-time users.
Can I install a composting toilet in a tiny home or RV?
Yes, many composting toilets are designed for small spaces like tiny homes, RVs, or boats. Portable and compact models are particularly suited for these environments, offering easy installation without extensive plumbing. However, ensure the unit fits your space and meets your capacity needs, and verify ventilation options for odor management.
What’s the main difference between urine-separating and all-in-one composting toilets?
Urine-separating toilets divert urine away from solid waste, significantly reducing odor and moisture, which simplifies composting. All-in-one models handle both waste types together, often requiring more frequent maintenance and careful management to control smells. Your choice depends on your space, maintenance willingness, and odor sensitivity—urine separation is generally more odorless but more complex to install.
