Farm Dimensions
How This Calculator Works
This tool provides a simplified estimate of a standard "dark room" mob spawner's efficiency. It calculates the total number of blocks mobs can spawn on inside your farm (the "spawnable spaces").
The "Estimated Drops Per Hour" are based on a simplified model of ideal conditions. Your actual rates will vary based on several important factors:
- Player Position: You must be positioned 24 to 128 blocks away from the farm for mobs to spawn.
- Spawn Proofing: All caves and dark areas within 128 blocks of your AFK spot must be lit up to ensure mobs only spawn inside your farm.
- Mob Cap: The game has a global mob cap. The farm must kill mobs quickly to make room for new ones to spawn.
- Server Performance: Lag or low server tick speed can significantly reduce spawn rates.
*Disclaimer: These numbers are an ideal estimate for comparison and planning. They are not a guarantee of actual in-game performance.