Compost Bins / 18.5 gallon composters
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18.5 Gallon Compost Bins

Catalog updated 2026-09-20

A popular compact size for single-chamber tumbling bins 20 bins · 13 brands

Food waste composters Small Countertop compost pails Indoor composters Tumbling Dual chamber composters BPA-free Black Cheap Yard waste bins Large Worm composting bins Composters with filters Green Underground composters 43 gallon composters Medium Stainless steel composters Composters with sliding doors Aerated White Rapid Composting starter kits Extra large composters Composters for raised beds Tray-based worm bins Static 80 gallon composters 18.5 gallon composters Box-style composters Grey Gray Foldable compost bags Bokashi composting kits Expandable Orange Wire mesh composters With viewing windows Galvanized steel bins Blue Brown Cedar wood composters Ceramic Red Tan

Best 18.5 Gallon Compost Bins

# Model Details Maker Range See price
1 Rotating single chamber tumbler with sliding doors BBBuy Rotating single chamber tumbler with sliding doors Black · Tumbling · Composters with sliding doors BBBuy Affordable
Affordable See price
2 Single chamber outdoor rotating compost bin DF Omer Single chamber outdoor rotating compost bin Tumbling · Composters with sliding doors · Rapid DF Omer Standard
Standard See price
3 Dual chamber tumbler in black and green DIAMONDFORGE Dual chamber tumbler in black and green Black · Tumbling · Dual chamber composters DIAMONDFORGE Pricier
Pricier See price
4 Dual chamber bin for yard waste EAST OAK Dual chamber bin for yard waste Dual chamber composters · Yard waste bins · Aerated EAST OAK Pricier
Pricier See price
5 Single chamber rotating garden compost bin EJWOX Single chamber rotating garden compost bin Small · BPA-free · Aerated EJWOX Standard
Standard See price
6 Single chamber rotating outdoor compost tumbler F2C Single chamber rotating outdoor compost tumbler Tumbling · BPA-free · Composters with sliding doors F2C Standard
Standard See price
7 Heavy duty tumbling composter with sliding door JupiterForce Heavy duty tumbling composter with sliding door Black · Tumbling · Yard waste bins JupiterForce Affordable
Affordable See price
8 Single chamber tumbling bin with steel frame Nouva Single chamber tumbling bin with steel frame Black · Food waste composters · BPA-free Nouva Affordable
Affordable See price
9 Dual chamber tumbling composter 37 gallon Nova Microdermabrasion Dual chamber tumbling composter 37 gallon Dual chamber composters · BPA-free · Composters with sliding doors Nova Microdermabrasion Affordable
Affordable See price
10 Lightweight single chamber tumbling compost bin SQUEEZE master Lightweight single chamber tumbling compost bin Small · Tumbling · Composters with sliding doors SQUEEZE master Standard
Standard See price
Before you buy

18.5 gallon composter questions

How much kitchen waste fits in an 18.5 gallon chamber?

About 70 liters, enough for daily scraps plus some yard trimmings.

Do dual chamber 18.5 gallon bins compost faster?

They let one batch cure while the other fills, so you always have finished compost.

Can I tumble an 18.5 gallon bin when it is full?

Yes, the locking system holds the door shut during turning.

What color are 18.5 gallon compost tumblers?

Black and green are the common colors, sometimes with a yellow or green accent.

What 18.5 gallon capacity handles

An 18.5 gallon chamber holds roughly 70 liters of material. That is enough for daily kitchen scraps plus some yard trimmings, but not a whole season of leaves. A dual chamber unit gives you two 18.5 gallon batches at different stages, so one side cures while the other fills.

How these bins are built

Most 18.5 gallon composters are tumbling drums with a horizontal axis and a locking or sliding door. Dual chamber models split the drum into two separate compartments with their own doors. Single chamber versions have one opening and one batch space.

Door and turning details

Sliding doors on 18.5 gallon bins let you dump finished compost without rotating the whole drum to a precise position. The locking system keeps the door shut during tumbling. Aeration holes or vents run along the drum body to let air in as you turn.

Colors and materials

These bins come in black and green most often. Some dual chamber models use black with a yellow or green accent on the door or frame. BPA-free plastic is the standard material for the drum and doors.

Also here
Tumbling Dual chamber composters Composters with sliding doors Black BPA-free Aerated Medium Yard waste bins