Redstone Comparator

For other redstone-related objects found in Minecraft, see Redstone (Disambiguation).

Redstone Comparators are special and unique redstone blocks that are similar to Redstone Repeaters. Redstone comparators have three torches on them, allowing for complex redstone circuits to be built. Redstone comparators have three ports, with two being for input, the third for output. Redstone comparators also measure how many things an entity holds or weighs, allowing for some very interesting adventure maps or mechanisms. They can also detect how many items are stored in a container block (such as a Chest, Hopper, Dropper, or Minecart with Chest). It can be utilized in a Redstone Circuit. It makes the same sound as Wood when broken.

A tutorial on YouTube is available that shows how to build with redstone comparators.

A comparator has two "modes": "compare mode" and "subtract mode", which players can tell by the status of the single torch on the front. The default mode is "compare" mode, which means that it will compare the signal it receives from the side to the signal it receives from behind. If the signal from the side is stronger than the one from behind, it won't give off a signal. If the signal from the side is weaker than the one from behind, the comparator will give off a signal equal to the one it receives from behind.

On "subtract" mode, the comparator will produce a signal equal to the signal it receives from behind minus the signal it receives from the side.

As of 1.15, redstone comparators can now detect how much Honey is inside Bee Nests and Bee Hives. The output strength is equal to the amount of honey in the said hive.

Crafting

Redstone Comparator
None	Redstone Torch	None
Redstone Torch	Nether Quartz	Redstone Torch
Stone	Stone	Stone

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Finally Explained How Do Minecraft Comparators Work?

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Blocks
Natural	Air • Stone • Granite • Diorite • Andesite • Dark Stone • Unnamed Smooth Speleothem Block • Unnamed Marble Block • Geode Casing • Bedrock • Clay ( Terracotta) • Cobblestone ( Moss) • Cobweb • Dirt ( Coarse Dirt)( Azalea Roots) • Gravel • Bone Block • Ice ( Packed • Blue) • Spawner • Sand ( Red) • Sandstone ( Red) • Obsidian • Snow( Powdered Snow) • Sponge • Wet Sponge • Stone Bricks ( Cracked • Mossy • Chiseled) • Prismarine ( Dark • Brick) • Clay Pot • Sea Lantern • Pumpkin • Bee Nest • Crying Obsidian • Grass Path • Infested Block • Speleothems
Manufactured	Bookshelf • Bricks • Wool ( Carpet) • Concrete( Powder) • Conduit • Dried Kelp Block • Fence • Glass ( Pane) • Stained Glass ( Pane) • Glazed Terracotta • Hay Bale • Iron Bars • Jack o' Lantern • Ladder • Painting • Scaffolding • Slab • Smooth Stone • Cut Sandstone • Smooth Quartz • Smooth Red Sandstone • Slime • Snow • Stairs • Walls • Wood Planks • Wood • Beehive • Honey Block • Honeycomb Block • Polished Diorite • Polished Granite • Polished Andesite • Red Nether Brick • Quartz Bricks • Polished Blackstone • White Candle • Black Candle • Sculk Block • Sculk Chute • Sculk Trap • Sculk Growth • Painted Clay Pot
Ore	Coal Ore • Copper Ore • Diamond Ore • Emerald Ore • Gold Ore ( Nether) • Iron Ore • Lapis Lazuli Ore • Redstone Ore • Nether Quartz Ore • Ancient Debris
Mineral Blocks	Block of Copper • Block of Diamond • Block of Emerald • Block of Gold • Block of Iron • Lapis Lazuli Block • Block of Quartz • Block of Redstone • Block of Coal • Block of Netherite
Utility	Bed • Brewing Stand • Cake • Cauldron • Chest • Shulker Box • Crafting Table • Enchantment Table • Furnace • Jukebox • TNT • Anvil • Blast Furnace • Barrel • Bell • Campfire • Cartography Table • Composter • Fletching Table • Grindstone • Lantern • Lectern • Loom • Smithing Table • Smoker • Stonecutter • Target • Respawn Anchor • Lodestone • Lightning Rod
Redstone/Travel	Button • Dispenser • Redstone Lamp • Door • Fence Gate • Lever • Note Block • Piston ( Sticky) • Pressure Plate • Rail ( Powered • Detector • Activator) • Redstone ( Wire • Redstone Torch • Repeater • Comparator) • Trapdoor ( Iron Trapdoor) • Trapped Chest • Hopper • Dropper • Daylight Detector • Tripwire Hook • Observer • Redstone Ore • Block of Redstone • Sculk Sensor
Plants	Cactus • Dead Bush • Chorus Plant • Flowers • Wither Rose • Grass( Grass • Fern) • Leaves • Lily Pad • Melon • Mushrooms( Huge) • Mycelium • Podzol • Nylium • Pumpkin • Saplings • Sugar Cane • Vines • Cocoa Pods • Wheat • Log • Corals • Kelp • Sweet Berry Bush • Nether Roots • Fungus • Weeping Vines • Twisting Vines • Sea Pickle • Dripleaf Plant • Baby Dripleaf Pant • Moss Block • Moss Blanket • Hanging Azalea Roots • Glow Berry Vine • Spore Blossom
Liquids	Lava • Water
Non-Solid	Fire ( Soul Fire) • Sign • Torch ( Soul Torch) • Banner • Amethyst Crystal
The Nether	Glowstone • Shroomlight • Netherrack • Nylium • Nether Brick ( Cracked • Chiseled • Fence) • Nether Quartz • Nether Gold • Ancient Debris • Nether Wart • Nether Roots • Weeping Vines • Twisting Vines • Fungus • Soul Sand • Soul Soil • Basalt • Magma Block • Blackstone
The End	Dragon Egg • End Stone • Purpur( Pillar) • Endstone Brick • End Rod • Dragon Head • Ender Crystal
Creative only	Barrier • Structure Block • Structure Void • Jigsaw • Amethyst Geode • Farmland • Spawner • Command Block ( Repeating • Chain)
Bedrock Edition only	Stonecutter (old) • Nether Reactor • Glowing Obsidian • Light Block • Border • Allow • Deny
Technical	Piston Arm • Block 36 • Burning Furnace • Glowing Redstone Ore • Off-state Redstone Torch • Active Redstone Repeater • Flowing Water • Flowing Lava • Pumpkin Stem • Melon Stem • Block 97 • Portal • End Portal Frame • End Portal • End Gateway (block) • Missing Texture Block
Removed	Cog • Dirt Slab • Spikes • Shrub • Rose • Locked Chest • Generic Dead Coral Block • Cyan Flower • Camera^(BE) • Wax Block • Buttercup Flower
Unimplemented	Crying Obsidian (old) • Wax Block
Education Edition only	Element Constructor • Material Reducer • Compound Creator • Hardened Glass • Hardened Glass Pane • Underwater TNT • Underwater Torch • Colored Torch • Element Lead

Crafting

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