Interactive · Minecraft crafting
Minecraft crafting tree calculator
Pick an item, expand it to raw materials, and watch the quantities multiply on the way down. Then tell it what you already have and it works out the shortfall. It is the same calculation a factory runs before it buys anything, which is the part that makes it interesting.
Expand a recipe to raw materials
Crafting tree
Click a row with a triangle to open or close it. Numbers on the right are the total needed for the whole build, not per craft.
Raw materials needed
| Material | Need | Have | Short |
|---|
Recipes follow standard Java Edition crafting. Check any of them against the Minecraft Wiki crafting page.
Why the numbers multiply instead of adding
A diamond pickaxe needs two sticks. Sticks come four at a time from two planks, and planks come four at a time from one log. So the pickaxe does not need "two sticks and some wood". It needs a specific fraction of a log, rounded up to a whole one, because you cannot gather half a log.
That rounding is where hand counting fails. Every level down multiplies by the quantity of the parent above it, and every craft that outputs a batch forces a rounding decision. Do that across five levels and a few hundred items and the arithmetic stops being something you can hold in your head.
This is not a Minecraft problem. It is the oldest problem in manufacturing, and it has a name.
Eye of ender calculator
Twelve eyes of ender fill an End portal. Each eye is one blaze powder plus one ender pearl, and one blaze rod crafts into two blaze powder. Eyes thrown to locate the stronghold have a chance of shattering, so a run needs a buffer on top of the twelve.
The defaults below are the totals GPT-6 Astra had actually banked when its run was cut short, as stated on the Vals AI stream: six blaze rods and three ender pearls.
Blaze powder is the limiter people forget: six rods is twelve powder, which is already enough for all twelve eyes. Pearls are almost always the bottleneck, and they come from trading or from the Endermen you were avoiding.
A crafting tree is a bill of materials
What the first tool just did has a name in industry: a multi-level bill of materials explosion. A product is broken into sub-assemblies, each sub-assembly into its parts, and the nested quantities multiply down until everything is expressed as raw material you have to buy.
Minecraft players do this constantly and never call it that. A manufacturer who gets it wrong orders the wrong quantity of steel and finds out three weeks later. It is the same calculation, and the same failure, with a longer feedback loop and an invoice attached.
If you want the industrial version of this tool, we built one: how a multi-level bill of materials works, using a bicycle instead of a pickaxe. The buffer that absorbs a bad supplier week is the other half of the problem, and that is safety stock.
This calculator exists because of a story worth reading: GPT-6 Astra played Minecraft for 21 hours, got as far as a nether fortress, and then lost its chest to a creeper. What happened next is the best argument for keeping a durable record that we have seen this year.
Frequently Asked Questions
How does a Minecraft crafting tree calculator work?
It expands a recipe recursively. Each ingredient that is itself craftable is replaced by its own recipe, and the quantities multiply down the chain, until everything is expressed as raw materials you gather rather than items you craft.
How many blaze rods do you need for 12 eyes of ender?
One blaze rod crafts into two blaze powder, and one blaze powder plus one ender pearl makes one eye of ender. So twelve eyes need six blaze rods and twelve ender pearls, before allowing for eyes that break when thrown to locate the stronghold.
Why do nested quantities multiply in a crafting tree?
Because a quantity at one level is multiplied by the quantity of the parent that needs it. If an item needs two sub-assemblies and each sub-assembly needs three parts, the total is six parts, not three. Missing that multiplication is the most common counting error.
Is a Minecraft crafting tree the same as a bill of materials?
Structurally, yes. A multi-level bill of materials explodes a product into sub-assemblies and then into raw materials with nested quantities, which is exactly what a crafting tree does. Manufacturers run the same calculation to work out what to buy.
If your real stock list works like this, we should talk
Most businesses we meet are running this calculation in their head or in a spreadsheet that only one person fully understands. It works until the quantities nest, a part appears in two products, or somebody leaves. We build the system that does the explosion for you and keeps the answer correct.