How to Build a Furnace in Minecraft: Complete Crafting Guide

A furnace is one of the first essential tools you'll craft in Minecraft. Without it, you can't smelt ores into usable metals, cook food to restore hunger properly, or process many of the raw materials the game throws at you from day one. If you're just starting out — or returning after a break — here's exactly how to build one and what to do with it.

What You Need to Craft a Furnace

Building a furnace requires 8 blocks of Cobblestone (or any stone-type material in newer versions). That's it. No iron, no special resources — just stone, which makes the furnace accessible within your first few minutes of gameplay.

Accepted materials include:

• Cobblestone
• Blackstone (found in the Nether)
• Cobbled Deepslate (found deep underground)

All three function identically in the crafting recipe. The furnace you get looks slightly different depending on the material used, but its behavior is the same.

Step-by-Step: Crafting Your Furnace 🔥

Step 1 — Gather stone Mine stone blocks with any pickaxe. A wooden pickaxe is enough. When you break naturally generated stone, it drops cobblestone, which is exactly what you need.

Step 2 — Open the Crafting Table You need a 3×3 crafting grid for this recipe, which means you need a Crafting Table placed in the world. Your default inventory crafting grid is only 2×2 and won't work here.

Step 3 — Fill the outer ring In the 3×3 grid, place cobblestone in every slot except the center. The center slot stays empty. The pattern looks like this:

Step 4 — Collect your furnace Drag the furnace from the output slot into your inventory. Place it anywhere in the world by right-clicking (or using your platform's interact button).

How to Use the Furnace Once It's Placed

Right-click the placed furnace to open its interface. You'll see three slots:

Common fuel sources (ranked roughly by efficiency):

• Lava bucket — longest burn time of any single fuel
• Coal / Charcoal — the standard reliable choice
• Wood logs and planks — accessible early but burn fast
• Blaze Rods — highly efficient, found in the Nether
• Bamboo — valid but low efficiency, requires large quantities

The furnace will show a flame animation while active. Each smelting operation takes 10 seconds (200 game ticks) by default.

What Can You Smelt in a Furnace?

The furnace handles a wide range of processing tasks:

Ores to metals:

• Iron Ore → Iron Ingot
• Gold Ore → Gold Ingot
• Copper Ore → Copper Ingot
• Ancient Debris → Netherite Scrap

Food preparation:

• Raw Beef, Pork, Chicken, Mutton, Rabbit → Cooked versions
• Raw Fish, Raw Salmon → Cooked Fish, Cooked Salmon
• Potatoes → Baked Potatoes

Other useful outputs:

• Sand → Glass
• Clay → Bricks
• Stone → Smooth Stone
• Cobblestone → Stone
• Wood Logs → Charcoal (useful early-game fuel loop)
• Wet Sponge → Dry Sponge

Furnace Variants Worth Knowing

The standard furnace works fine, but Minecraft includes upgraded versions that change how you smelt:

Blast Furnace — Smelts ores and metal items at double speed but only accepts ores and metal-related items. Requires iron ingots and smooth stone to craft.

Smoker — Cooks food at double speed but only works on food items. Requires wood logs to craft alongside furnaces.

Campfire — Cooks up to four food items simultaneously without fuel, but very slowly. Doesn't require a crafting table to use once placed.

For early-game survival, the standard furnace handles everything. Blast furnaces and smokers become worth building once you have a steady material supply and want to optimize processing speed.

Variables That Affect Your Furnace Strategy

How you use your furnace depends on factors specific to your playthrough:

Game version — Java Edition and Bedrock Edition share the same basic furnace mechanics, but slight differences exist in how experience points are awarded from smelting and how some automation behaviors work.

Playstyle — A survival player focused on early food security will prioritize the smoker upgrade. A player building large structures will care more about bulk glass or brick production from the standard furnace.

Available resources — If you're in a coal-scarce biome, you'll lean on wood or establish a charcoal loop earlier. If you've reached the Nether, lava buckets become an essentially unlimited fuel source.

Automation goals — Players building technical setups often connect furnaces to hoppers, allowing automatic input and output without manual management. A single hopper on top feeds raw materials in; one on the side or bottom feeds fuel; one beneath collects finished items. This changes how you think about furnace placement entirely.

Experience farming — Smelting certain items (particularly ores) generates experience orbs when you collect the output. Some players deliberately stockpile unprocessed ore to collect large XP bursts at once, which affects how they time their smelting sessions.

The basic build is always the same eight cobblestone blocks. What you smelt, what you fuel it with, and whether you ever upgrade or automate it — that's where your own world's specific conditions and goals start to matter more than any general guide can account for.