Calculation
Formula and game rule
Chunk coordinate = floor(block coordinate ÷ 16). Local coordinate = block coordinate modulo 16 normalized to 0–15.
Coordinates
Chunk Coordinate Calculator
Find a block's chunk and its exact local position, including negative coordinates.
Chunk Coordinate CalculatorTry it now
Your Minecraft mission
- Chunk
- -1, -2
- Local block
- 15, 15
- Chunk start
- -16, -32
Game rule: Negative positions use floor division, matching Minecraft chunk boundaries.
Step-by-step guide
How to use the Chunk Coordinate Calculator
Enter the block's world X and Z coordinates.
Read the chunk X/Z pair containing that block.
Use the local 0–15 position and chunk start to locate borders precisely.
Worked example
Example result
Block X −1, Z −17 is in chunk X −1, Z −2 at local position X 15, Z 15.
What to check before using the result
- Negative coordinates require floor division; truncating toward zero gives the wrong chunk.
- Each chunk covers 16×16 horizontal blocks, while vertical chunk sections are a separate storage concept.
Java and Bedrock Edition
Java and Bedrock both use 16×16 horizontal chunks, so this coordinate conversion applies to both.
This page is designed for players looking for a Minecraft chunk calculator, block to chunk coordinates, negative chunk coordinates. The calculator runs locally in your browser and updates without sending your world coordinates or command inputs to the server.
Common questions
Chunk Coordinate Calculator FAQ
Why is block −1 in chunk −1 instead of chunk 0?
Chunk boundaries extend negatively using floor division, so chunk −1 covers blocks −16 through −1.
What values can a local chunk coordinate have?
Local X and Z are always whole positions from 0 through 15.