|Catches fire from lava||
Composters can be broken with any tool, though an axe is the fastest. The composter does not retain the compost inside; instead, it drops empty.
- Times are for unenchanted tools as wielded by players with no status effects, measured in seconds. For more information, see Breaking § Speed.
|Any wood Slab|
Composters generate in village farms.
Composters can be used to recycle food and plant items (excluding bamboo, poisonous potatoes, dead bushes, meat, and fish) into bone meal. To do so, the player must use any of a selection of items on the composter. When an adjacent comparator is facing away from the composter, a comparator signal strength of up to 8 is emitted depending on the fullness of the block. Composters appear to have an empty interior. As such, entities can enter and exit a composter through the top, but not the sides or bottom. The composter has a "floor", whose height depends on the fullness. When the composter is completely empty, this floor is slightly above the block below, and when it is completely full, there is a slight dip on top. When the composter’s fullness increases, any entities inside are pushed up accordingly.[Bedrock Edition only]
The composter can be filled with compost, which is done by adding compostable items to it. When successfully adding an item, a green particle appears. The table below lists supported items, which have different levels of compost-ability. The higher the percentage of an item, the more likely it is for it to add another layer of compost. Each layer of compost has a podzol-like appearance. When the composter reaches the 7th layer of compost, the compost changes appearance indicating that bone meal can be collected by using the composter a final time.
The following table shows the items that can be used in a composter, the percent chance for an item to add a level of compost, and the average number of items needed to fill a composter. Smaller pieces (individual pieces of wheat, melon slices, etc.) produce more compost than the blocks or other items that can be made from them. The exception is cookies, because each recipe produces 8 cookies, and together those give more than 3 times the compost.
|Average number of items required to fill a composter (bone meals per stack)|
|~23.33 (~2.74)||14 (~4.57)||~10.77 (~5.94)||~8.24 (~7.77)||7 (~9.14)|
Composters can interact with hoppers. A hopper directly below a composter pulls bone meal from it. A hopper or dropper facing downward directly above a composter pushes items into it. See Hopper § Redstone component for more details.
Hoppers cannot interact with the sides of a composter.
Changing villager profession
A composter can act as a power source for a redstone comparator. With a composter behind it (either directly, or separated by an unpowered solid block), a comparator outputs a signal strength between 0 and 8, proportional to how full the composter is: 0 for empty, 1 for 1⁄7 full, 2 for 2⁄7 full, 3 for 3⁄7 full, 4 for 4⁄7 full, 5 for 5⁄7 full, 6 for 6⁄7 full, 7 for completely full but the bone meal is not ready to collect, and 8 for completely full and the bone meal is ready to collect. However, if there is a block between the composter and comparator, the comparator does not immediately update.
Composters can be placed under note blocks to produce "bass" sound.
|Sound||Subtitle||Source||Description||Namespaced ID||Translation key||Volume||Pitch||Attenuation|
|?||?||Plays when emptying a composter||?||1||?||16|
|?||?||Plays when adding to a composter||?||0.3||0.8||16|
|?||?||Plays when successfully adding to a composter||?||1||?||16|
|?||?||Plays when composting completes||?||1||?||16|
|Name||Namespaced ID||Form||Translation key|
|Composter||Block & Item|
|Name||Namespaced ID||Numeric ID||Form||Translation key|
|Composter||Block & Item|
|Name||Default value||Allowed values||Description|
|When at level 8, bone meal is able to be collected from the composter.|
|The crafting recipe of composters is 4 fences and 3 planks.
|19w03b||All mushroom blocks can now be used in composters.|
|19w04a||Composters now spawn in village farms.|
|19w05a||The chances of composters have been changed from 10/20/50/80/100% to 30/50/65/85/100%.|
|1.15||19w45a||The crafting recipe of composters has been changed to match Bedrock Edition.
|1.16||20w15a||Weeping vines, twisting vines, roots, nether sprouts, fungi, nether wart, nether wart blocks, and warped wart blocks can now be composted.|
|pre3||Shroomlight can now be composted.|
|Upcoming Java Edition|
|1.17||21w05a||Azalea, dripleaves, hanging roots, glow berries, moss blocks, moss carpet, and spore blossoms can now be composted.|
|1.10.0||beta 220.127.116.11||Added composters.|
|Composters are currently available only through Experimental Gameplay.|
|The crafting recipe of composters is 7 wooden slabs.
|Composters currently have glitchy 'over-filled' states, with the soil extending past the composter itelf.|
|1.11.0||beta 18.104.22.168||Functionality has been added to composters.|
|beta 22.214.171.124||Composters now support hopper placement.|
|?||The glitched 'over-filled' block states have now been removed.|
|1.16.0||beta 126.96.36.199||Weeping vines, twisting vines, roots, nether sprouts, fungi, nether wart, nether wart blocks, and warped wart blocks can now be composted.|
|1.16.100||beta 188.8.131.52||Shroomlight can now be composted.|
|PlayStation 4 Edition|
- The compost texture is part of the podzol texture.
- If planting crops specifically for composting, potatoes produce somewhat more than beets, carrots, or wheat. However, melons offer nearly the same yield per field space, and do not require replanting after harvest.
- Composters are one of the few wood-based blocks that don't resemble any of the 8 existing wood-types, with the others being Chests, Trapped Chests, Note Blocks, Jukeboxes and Smithing Tables.