Minecraft Spawner Range Calculator
Plot the activation sphere, mob cap, and lighting check for any spawner. Find the optimal AFK spot.
Spawner active
All conditions met — mobs are spawning normally.
Positions
Spawner position
Player / AFK position
Environment
Nearby mobs (within 9×9×9)0 / 6
Light level at spawn area0 / 15
Spawns / min
~6.0
Mob cap
0 / 6
Avg delay
1.3s
Spawn area
9×9×3
Spawner mechanics
Activation range16 blocks (sphere)
Spawn delay10-40 ticks
Max nearby mobs6 entities
Optimization tips
- 👁️ AFK exactly 16 blocks away (edge of activation range)
- 💧 Use water streams to push mobs 9+ blocks away immediately
- 📦 Keep spawn platforms at Y-2 to Y+2 relative to spawner
- 🌑 Light level must be 0 for zombie / skeleton / spider spawners