HOW IT WORKS
How to use this tool
- 1Enter the block light of the source, from torches (14) down to 1.
- 2Enter the distance in blocks and the sky light at the target spot.
- 3Read the remaining block light and the effective brightness the game uses.
Minecraft
Minecraft Light Level Calculator
The free Minecraft light level calculator: see how far block light travels and combine it with sky light to find the real brightness of any spot.
Last updated:
Local browser processing • no upload required
Calculate the remaining block light after distance and the effective brightness with sky light.
Light results
- Block light remaining
- 10
- Effective brightness
- 10
Light formulas follow Java Edition. Bedrock handles sky light the same way, but some light-emitting blocks differ.
Next Creation Steps
Quick answer
How far does light travel in Minecraft?
Light loses one level for every block of distance. A torch with light 14 still lights up the block 14 blocks away at level 0.
Key specifications
- Processing
- In your browser
- Tool files
- Processed on your device
- Access
- Free; no account required
- Result
- On-screen calculation; no file export
Sources
FAQ
FAQ
How far does light travel in Minecraft?
Light loses one level for every block of distance. A torch with light 14 still lights up the block 14 blocks away at level 0.
What light level stops mobs from spawning?
Hostile mobs stop spawning at block light 0 in Java Edition. Keep the effective brightness above 0 to keep an area spawn-proof.
What is the light level of a torch?
Torches emit light level 14, lanterns and glowstone 15, candles 3–15 depending on count, and campfires 15.
How do block light and sky light combine?
The game uses whichever is brighter, so the effective brightness is the maximum of the remaining block light and sky light.
Why is my farm still spawning mobs?
Check both light sources: a bright block light can fade to zero before reaching a corner, and sky light drops by one per block below open sky.