These are the top five best Composting Toilets on the market, chosen from Hundreds of models.

#5 – Thetford 92360 Porta Potti 550E Curve BestValueLRG

Price: $117.26
You save: $50.99 (30 %)
60 new from $117.260 used
  • Sleek, modern and homelike design with a comfortable seat height, increased bowl size and integrated toilet paper holder
  • Hidden battery-powered flush controls
  • Holding tank level indicator for fresh water and waste tanks
  • Improved water tank carrying handle
  • Optional hold down kit

The Thetford 92360 is a composting toilet that is light in weight and will last you a long time. It is a very compact and self-contained composting toilet. Despite its small overall size, it still has an elongated comfort sized seat.

It uses no water to operate and has a urine separator (which typically needs emptying about every two days). The toilet will work at any temperature. Before using the Thetford 92360 it is recommended to fill it with 2 gallons of peat moss.

#4 – Biolet Toilet Systems 33

Biolet Toilet Systems BTS33NE Biolet 33 Non-Electric Waterless Toilet
Price: --
0 new0 used
  • Brings functionality to your home, while offering the trusted, enduring qualities , this collection features high style for the discriminating consumer
  • Beautifully detailed, this item captures the essence of old-world elegance
  • Adds a splash of color to brighten up your home

The Biolet Toilet Systems 33 composting toilet comes with a great features of being self-contained and waterless. This self-contained system doesn’t need any utility hookups to function, so you can install it anywhere. It has a convenient two-batch system that allows for a higher use capacity.

Up to 4 people can use it full time or 6 people part time without causing any overuse problems. The styling is sleek and elegant and will match with any sort of interior design. The Biolet Toilet System is comfortable and practical. It has small enough measurements to fit in almost any space in a home or a mobile living space.

#3 – Camco 41541

Price: $40.71
You save: $0.83 (2 %)
35 new from $40.711 used from $34.60
  • 5.3 gallon holding tank is detachable; 2.5 gallon flush tank
  • Sealing slide valve locks in odors and protects against leakage
  • Side latches secure the tank to the toilet
  • Bellow-type flush and sturdy construction
  • Measures 15.5" H x 14" W x 16" . Please note: Total Seat Width is 13 inches. Seat dimensions (inside) are: 8.5"W x 9"D

The Camco 41541 is a well-reviewed composting toilet that is small in size, but large in its ability to deliver. The 5.3 gallon tank is big enough to handle medium usage and won’t be too small for a family.

The bellow-type flush and sturdy construction make this a unique toilet on this list. It’s small, but it’s design is top notch – the sealing slide valve helps to keep odors in and the side latches will keep the tank attached to the toilet.

#2 – The Sun Mar Excel Self Contained Composting Toilet

Sun-Mar Excel Self-Contained Composting Toilet, Model# Excel
Price: $1,895.00
3 new from $1,895.000 used
  • High capacity unit can be used just about anywhere, including residences, cabins or light commercial applications
  • Low profile unit complements any bathroom
  • Uses no water
  • 100% non-polluting
  • Bio-drum for processing compost

The Sun-Mar Excel Self Contained Composting Toilet has a large capacity and can cope with three adults or a family of five on a continuous basis, or up to 6 adults on a weekend vacation.

The toilet has an electrical heat and vent fan. Under normal circumstances it can evaporate all liquids. To cope with excessive use or power cuts, there is an emergency ½” drain outlet to stop overflows. The seat to the toilet is quite high to accommodate the composting tray in the base. As the toilet is higher than a standard toilet, to make the toilet more comfortable to use, a small step is included with the Sun-Mar Excel composting toilet.

#1 – Natures Head Dry Composting Toilet

Nature's Head Dry Composting Toilet / Standard Crank Handle
Price: $860.00
5 new from $860.000 used
  • Hand crank agitator in base for fast composting
  • User friendly
  • Easy installation
  • Features a molded design
  • Includes 5' vent hose, bottle cap, 12v power plug

While the overall design of the toilet is impressive some reviewers have complained about it featuring a standard crank handle instead of the spider handle.

The Nature’s Head Dry Composting Toilet has a lot of features to offer its users. It has an elongated seat design for added comfort as well as a separator which channels urine into a detachable urine bottle. It also makes use of an optional 12v or 110v vent fan which blows foul odors out through a 5’ outlet pipe.

The toilet has a container, a lid to remove the waste product, and additional containers and lids are available if you want to compost the waste for longer periods. The Nature’s Head Dry Composting Toilet is also made of durable material in order to stand against various weather conditions. This is definitely the best overall composting toilet available to consumers.

Composting Toilet Reviews & Comparisons

COMPOSTING TOILETS TopPickLRGnatures-head-dry-composting-toilet white imagethe-sun-mar-excel-self-contained-composting-toilet white imagecamco-41541 white imagebiolet-toilet-systems-33 BestValueLRGthetford-92360-porta-potti-550e-curve
MODELS Natures Head Dry Composting Toilet The Sun Mar Excel Self Contained Composting Toilet Camco 41541 Biolet Toilet Systems 33 Thetford 92360 Porta Potti 550E Curve






X-FACTOR 5 Vent Hose Bio-Drum Detachable Water Tank Style Holding Tank Indicator
DIMENSIONS 22 X 20.5 X 21.7 Inches 33 X 22 1/2 X 33 Inches 6.7X5.9X5.5 Inches 24 X 20 X 23 Inches 16 X 20.5 X 19Inches
WEIGHT 27.2 Pounds 100 Pounds 0.03 Pounds 25.5 Pounds 10 Pounds
WARRANTY LENGTH 3 Years 5 Years 1 Year 5 Years 5 Years
WATERLESS CONSUMPTION YesMark YesMark NoMark YesMark YesMark
BATTERIES NoMark NoMark NoMark NoMark YesMark
COMFORTABLE SEAT YesMark YesMark NoMark YesMark YesMark
ELECTRIC YesMark YesMark NoMark NoMark YesMark
ODORLESS YesMark YesMark NoMark YesMark YesMark
AMAZON PRIME? YesMark YesMark YesMark YesMark YesMark
LEARN MORE Read Full Review Read Full Review Read Full Review Read Full Review Read Full Review


Composting Toilets Buyer’s Guide

There’s no lie in the fact that you can easily find a number of reviews regarding the best composting toilets on the web. You can also find a whole list of the best composting toilets and why you should buy them. However, there’s also no lie in the fact these composting toilet reviews don’t provide a lot of information. They won’t let you know about all of the things you need to keep in mind before buying a composting toilet. So, to make buying easier for everyone here are a few factors that you need to keep in mind whenever you’re in the market for buying a composting toilet.

Design: Before making a purchase you need to make sure that the design of the composting toilet is to your liking. Does it have an elongated seat to make its use comfortable? Will it go with the interior of your bathroom or anywhere else you might want to install it? The designs vary when it comes to composting toilets so feel free to take your time and buy the one featuring the design you prefer.

Space: Composting toilets are basically for a tiny space or for homes that are small, RVs, and trailers, etc. Make sure that the composting toilet your want to buy is suitable for the space that you have. All of those fancy features aren’t going to look useful anymore if you don’t have the proper space to make use of them.

Cleaning Capacity: This deals with how much capacity a composting toilet has. Is it suitable for use by more than two or three people? How many times does it need to be cleaned? If you have a lot of people living with you then make sure you buy a toilet that is able to accommodate them all and not give rise to overflowing.

Odorless: Make sure that the composting toilet has an odorless feature. It needs to have fans or vents that are able to deal with the smell. Using the toilet is going to more than uncomfortable if the smell is unbearable.

The next time you decide to buy a composting toilet make sure that you have these factors in mind before making the final purchase. You deserve the top rated composting toilets for use!

Top 5 Best Composting Toilets

Ranking Composting Toilet Best Feature
#1 Natures Head Dry Composting Toilet 5 Vent Hose
#2 The Sun Mar Excel Self Contained Composting Toilet Bio-Drum
#3 Camco 41541 Detachable Water Tank
#4 Biolet Toilet Systems 33 Style
#5 Thetford 92360 Porta Potti 550E Curve Holding Tank Indicator


About the Author:

Sarita F. grew up in a well-decorated house and was taught about interior design at a young age. After finishing college and struggling in the marketing world, she decided to become a freelancer who focused on home and fitness products.