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This feature is exclusive to Java Edition and Bedrock Edition. 
Crafting Table
This article describes content that may be included in a future update. 
This content has appeared in development versions, but the full update containing it has not been released yet.

A composter is a block which converts crops and plants into bone meal.

Obtaining

Crafting

Name Ingredients Crafting recipe Description
Composter Any wood Fence +
Any Planks

[Java Edition only]
Composter Any wood Slab

[Bedrock Edition only]

Natural generation

Composters can generate in farms in villages.

Usage

Composters can be used to produce bone meal. To do so, the player must use any of a selection of items on the composter. The composter can also be used to recycle unneeded plant items. 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.‌[upcoming: BE 1.11.0]

Composting‌[upcoming: BE 1.11.0]

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. See the table below for all supported items. These items have different levels of compostability. The higher the percentage of an item, the more likely it is for that item to add another layer of compost to the block when used on it. Each layer of compost has a podzol-like appearance. When the composter reaches the 7th layer of compost, the compost will change 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 amount of items needed to fill a composter:

30% 50% 65% 85% 100%
Average number of items required to fill a composter
≈23.33 14 ≈10.77 ≈8.24 7

Hoppers‌[upcoming: BE 1.11]

Composters can interact with hoppers by placing a composter on the upper side of a hopper and producing bone meal from the composter, which will cause the bone meal to be collected into the hopper automatically (see Hopper § Redstone component for more details about hopper-specific mechanics). Hoppers cannot be drawn into the sides of composters.

Hoppers can also push items into the composter from above.

Changing villager profession

If a village has a composter but no farmer villager, any resident villager who has not already chosen a work station has a chance to change their profession to a farmer.‌[upcoming: BE 1.11.0]

Fuel

A composter can be used as fuel in a furnace to smelt 1.5 items.

Data values

Block states

Java Edition:

Name Default value Allowed values Description
level00
1
2
3
4
5
6
7
8
When at level 8, bone meal is able to be collected from the composter.

Bedrock Edition:

NameMetadata Bits Default value Allowed valuesValues for
Metadata Bits
Description
composter_fill_level0x1
0x2
0x4
0x8
00
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
When at level 8, bone meal is able to be collected from the composter.

History

Upcoming Java Edition
1.14Added composters.
19w03bAll mushroom blocks can now be used in composters.
19w04aComposters now spawn in village farms.
19w05aChances changed from 10/20/50/80/100% to 30/50/65/85/100%.
Bedrock Edition
1.10.0beta 1.10.0.3Added composters, which are only available through Experimental Gameplay with different crafting recipe.
Upcoming Bedrock Edition
1.11.0beta 1.11.0.1Added composter functionality.
beta 1.11.0.3Composter now supports hopper placement.

Issues

Issues relating to "Composter" are maintained on the bug tracker. Report issues there.

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