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Redstone Comparator
RedstoneCraftable

Redstone Comparator

A redstone component that compares or subtracts signal strengths and reads the fill level of containers. It is a core part of advanced redstone circuits.

Stack Size

64

Durability

N/A

Category

Redstone

Version Added

1.5

Item ID

redstone_comparator

Redstone Comparator at a glance

Redstone holds Redstone Comparator: a redstone component out of crafting. Stack Redstone Comparator 64 high: 576 across a hotbar, 1728 in a shulker box, and 3456 in a double chest.

Redstone Comparator earns its place in redstone by what it does to a signal, and that behaviour is the building block under the farms, doors and machines that run without a player standing there. It sits between Redstone Comparator and Redstone Dust in Redstone, number 17 of 29 there.

Crafting recipe

Crafting
Redstone TorchRedstone Torch
Redstone TorchRedstone Torch
Nether QuartzNether Quartz
Redstone TorchRedstone Torch
StoneStone
StoneStone
StoneStone
Redstone ComparatorRedstone Comparator
Recipe data from Astroworld Crafting, where Redstone Comparator has the grid for Redstone Comparator

How to obtain

  • Crafting

Notes

Toggle between compare and subtract modes by right-clicking the front torch.

Frequently asked questions about Redstone Comparator

  1. Redstone Torch, Nether Quartz, Stone going into Redstone Comparator, the recipe this answer describes

    How do you get Redstone Comparator in Minecraft?

    Redstone Comparator is crafted from Redstone Torch, Nether Quartz, and Stone at a Crafting Table, in a single step.

  2. Redstone Comparator coming forward out of the past, in the game since 1.5

    When was Redstone Comparator added to Minecraft?

    Redstone Comparator was added in version 1.5.

  3. 64 Redstone Comparator drawn together, the full slot the answer counts

    How many Redstone Comparator can you stack?

    64 Redstone Comparator fills a slot, and that slot costs 192 Redstone Torch, 64 Nether Quartz, and 192 Stone, which is 64 crafts at the crafting table.

  4. Redstone Comparator on its own, since nothing in the game is crafted from it

    What is Redstone Comparator used for?

    A redstone component that compares or subtracts signal strengths and reads the fill level of containers. It is a core part of advanced redstone circuits.

Building with it

The comparator has two modes: compare, where a side signal cancels the output, and subtract, where it reduces it. Combined with its ability to measure container contents, that makes it the sensor and the logic gate of most automated farms in a world.

In practice

A comparator reading a container turns fullness into a number from zero to fifteen, and the same output comes from a cauldron, a composter, a lectern's page and an item frame's rotation. That is what lets a hidden switch look like an ordinary picture on a wall.

Related Astroworld Resources

Redstone Comparator in a redstone circuit

Timing, signal strength and wiring for Redstone Comparator on Astroworld Redstone

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Full Crafting Guide

Step-by-step crafting recipe for Redstone Comparator

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