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Smelting (or Melting, Baking, Cooking, Burning) is the way you smelt or heat items in Minecraft. The furnace, when right-clicked, has its own menu where heating operations can be done. It consists of one field for the object that will be heated, one field for the fuel and one field for the output object. Each heating operation takes 9.25 seconds. Smelting will work when the smelting menu is closed, as long as there are still objects to heat and there is enough fuel. The fire icon diminishes to represent the fuel burn time. When the fire icon diminishes fully, another fuel item is consumed and the flames are replenished. If all objects are heated, the furnace will stop using additional fuel. If there is no fuel left, the furnace will become inactive. If a heating process was running, it will be cancelled and must be redone.

Food

Name Ingredients Input » Output Description
Cooked Porkchop Raw Porkchop + Fuel Template:Grid/Furnace Fills 🍗🍗🍗🍗, while raw only fills 🍗🍗.
Steak Raw Beef + Fuel Template:Grid/Furnace Fills 🍗🍗🍗🍗, while raw only fills 🍗🍗.
Cooked Chicken Raw Chicken + Fuel Template:Grid/Furnace Fills 🍗🍗🍗, while raw only fills 🍗.
Cooked Fish Raw Fish + Fuel Template:Grid/Furnace Fills 🍗🍗🍗, while raw only fills 🍗.

Ores and materials

Name Ingredients Input » Output Description
Iron Ingot Iron Ore + Fuel Template:Grid/Furnace Used to craft various items, including iron swords, iron picks (or pickaxes), and iron blocks.
Gold Ingot Gold Ore + Fuel Template:Grid/Furnace Used to craft various items. See iron ore.
Glass Sand + Fuel Template:Grid/Furnace Used to make transparent structures, like windows. Also used to craft Glass Panes and Glass Bottles.
Stone Cobblestone + Fuel Template:Grid/Furnace Used as a building material, and is also used for crafting Stone Brick blocks and Redstone Repeaters.
Clay Brick Clay + Fuel Template:Grid/Furnace Used to make Brick (Block).
Diamond Diamond Ore + Fuel Template:Grid/Furnace Used to craft various items. One may only get Diamond ore through the Silk Touch enchantment.
Lapis Lazuli Lapis Lazuli Ore + Fuel Template:Grid/Furnace Used as a dye, and to craft a Lapis Lazuli Block. One may only get Lapis Lazuli ore through the Silk Touch enchantment.
Redstone Dust Redstone Ore + Fuel Template:Grid/Furnace Used to create electric circuits. One may only get Redstone ore through the Silk Touch enchantment.
Coal Coal Ore + Fuel Template:Grid/Furnace Used as a fuel and as lighting. One may only obtain coal ore through the Silk Touch enchantment.

Misc

Name Ingredients Input » Output Description
Charcoal Wood + Fuel Template:Grid/Furnace Used to craft Torches and as fuel in a Furnace or in a Minecart with Furnace.
Cactus Green Cactus + Fuel Template:Grid/Furnace Used as a Dye.

Fuel efficiency

Each operation costs 200 units of heat.

Fuel Heat Value Burning Time Number of
Operations
per Fuel
Amount to
Light a Furnace
All Night
Seconds per
Wood Block (log)[a]
Amount needed to
burn a stack (64) of items
Template:Grid Lava Bucket 20000 1000s 100 0.54 - 0.64
Template:Grid Blaze Rod 2400 120s 12 4.5 - 5.33
Template:Grid Coal 1600 80s 8 6.75 - 8
Template:Grid Charcoal 1600 80s 8 6.75 up to 70s[b] 8
Template:Grid Wooden Planks 300 15s 1.5 36 60s 43
Template:Grid Fence 300 15s 1.5 36 40s 43
Template:Grid Wooden Stairs 300 15s 1.5 36 40s 43
Template:Grid Trapdoor 300 15s 1.5 36 20s 43
Template:Grid Oak Wood 300 15s 1.5 36 15s 43
Template:Grid Birch Wood 300 15s 1.5 36 15s 43
Template:Grid Spruce Wood 300 15s 1.5 36 15s 43
Template:Grid Crafting Table 300 15s 1.5 36 15s 43
Template:Grid Bookshelf 300 15s 1.5 36 10s 43
Template:Grid Chest 300 15s 1.5 36 7.5s 43
Template:Grid Jukebox 300 15s 1.5 36 7.5s 43
Template:Grid Note Block 300 15s 1.5 36 7.5s 43
Template:Grid Locked Chest 300 15s 1.5 36 - 43
Template:Grid Oak Sapling 100 5s 0.5 108 - 128
Template:Grid Birch Sapling 100 5s 0.5 108 - 128
Template:Grid Spruce Sapling 100 5s 0.5 108 - 128
Template:Grid Stick 100 5s 0.5 108 40s 128
  1. This column is the unit-of-wood-equivalent. Calculation made once the fuel item is converted back to wood.
  2. The fuel cost of turning a wood block into charcoal (1/8 of a second charcoal item) is already deducted from this amount.

History

Jigsaw Block (top texture) JE2 BE2
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Before the furnace appeared, smelting was accomplished by creating a fire and dropping the ore into it. During the Survival Test versions of Minecraft you started with a bunch of TNT and flint and steel which allowed you to smelt any ores before furnace was released.

Trivia

  • It takes 9 minutes and 52 seconds to smelt a stack of 64 items
  • If you sleep in a bed while a furnace is smelting, the furnace will smelt as if no time has passed. The reason for this is because when you sleep in a bed, no time actually goes by, but instead the game sets the time of day to morning.
  • Burning Wood with Wooden Planks to make Charcoal is over 5 times more efficient than using the wood itself as fuel. It is just over 1 14 times more efficient than using planks.
  • Note that when using a bucket of lava, the bucket vanishes when used. Jeb tweeted a while back that he would like to change this so it does not vanish. [citation needed]
  • Jeb has stated he likes the idea of smelting Gravel to create "Stone Chunks", which could be crafted into Stone Bricks in a 2x2 grid.[1]

See also

References

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