Craft Calc

A calculator inside the Minecraft chat, with shortcuts built for players. Open the chat, type a math expression and the result shows up above the text box, no commands needed. Press Tab to replace the expression with its result.

What it is for

• Work out how many items, stacks or chests you need without leaving the game.
• Size farms and factories: how many machines are needed to reach a rate per minute.
• Quick math while playing, instead of opening a separate calculator.

How to use it

1. Open the chat with T.
2. Type an expression, for example 5*3+2.
3. Read the result above the text box.
4. Press Tab to paste it, or Enter to send the message as usual.

What it understands

• Operators: + - * / % ^ and parentheses. Decimals use a dot (0.5).
• Percentages: 20% de 150 gives 30 (“de” means “of”).
• Functions: sqrt abs floor ceil round min max pow log ln.
• Minecraft helpers: maq(120;30) (machines needed, rounded up), stacks(1000) and cofres(5000) (chests needed).
• Constants: stack (64), cofre or shulker (1728 items), doble (3456, double chest), segundo (20 ticks), minuto (1200 ticks) and dia (24000 ticks, one Minecraft day).

Examples: ceil(1000/stack) gives 16 stacks. 3*minuto gives 3600 ticks.

Minecraft shortcuts

On top of normal math, Craft Calc has a few shortcuts for things you calculate all the time in Minecraft. Every shortcut has an English and a Spanish name, and both do the same thing.

Ready-made numbers

These are numbers the mod already knows, so you don’t have to remember them. Use them inside a calculation:

Examples:

• 2*chest gives 3456 items.
• 3*minute gives 3600 ticks.
• ceil(1000/stack) gives 16, the stacks needed to hold 1000 items.

Important: a word on its own does nothing. Typing just day shows no result, because the calculator only turns on when it sees an operation like +, -, *, / or a function. That way it never gets in the way of your normal chat messages. Type 2*day and you will see = 48000.

Shortcut functions

These do a calculation and round up, since you can’t build half a machine or use half a chest.

machines(wanted ; per machine) (Spanish: maq) How many machines you need. The first number is how many items per minute you want, and the second is how many one machine makes per minute.

• A furnace smelts 6 items per minute. To smelt 120 per minute, type machines(120;6) and you get = 20 furnaces.
• A blast furnace smelts 12 per minute: machines(120;12) gives = 10.

stacks(items) How many stacks of 64 your items fill. stacks(1000) gives = 16.

chests(items) (Spanish: cofres) How many chests you need to store that many items. chests(5000) gives = 3. For double chests, type ceil(5000/double) and you get = 2.

These shortcuts assume stacks of 64. Items that stack to 16, or don’t stack, need a different calculation.

Options

After running the game once, config/craftcalc.properties is created. You can change the result color, the box position (left, center or right) and show or hide the [Tab] hint.

Requirements

• Minecraft 26.3
• Fabric Loader and Fabric API
• Client-side only: no need to install it on the server.