Mob Farm Calculator

Calculate spawn rates, XP output, and loot drops for your mob farm. Optimize your farm design for maximum efficiency.

Farm Configuration

Spawn Area:324 blocks
Est. Spawns/Hour:~11,664

XP & Efficiency

XP per Hour
58,320
Lvl 30s per Hour
~41

Mob Breakdown

Zombie24.1% spawn rate
Per Hour:~2,811
XP per Hour:14,053
Skeleton24.1% spawn rate
Per Hour:~2,811
XP per Hour:14,053
Spider24.1% spawn rate
Per Hour:~2,811
XP per Hour:14,053
Creeper24.1% spawn rate
Per Hour:~2,811
XP per Hour:14,053
Enderman2.4% spawn rate
Per Hour:~281
XP per Hour:1,405
Witch1.2% spawn rate
Per Hour:~141
XP per Hour:703

Loot per Hour

Gunpowder
~2,916
per hour
Rotten Flesh
~2,811
per hour
Bone
~2,811
per hour
Arrow
~2,811
per hour
String
~2,811
per hour
Spider Eye
~569
per hour
Ender Pearl
~141
per hour
Glass Bottle
~105
per hour
Glowstone Dust
~105
per hour
Redstone
~105
per hour
Sugar
~105
per hour
Stick
~105
per hour
Iron Ingot
~70
per hour
Carrot
~70
per hour
Potato
~70
per hour

Detailed Drop Rates

MobDropPer MobPer HourPer Day
ZombieRotten Flesh1.002,81167,454
Iron Ingot0.03701,686
Carrot0.03701,686
Potato0.03701,686
SkeletonBone1.002,81167,454
Arrow1.002,81167,454
SpiderString1.002,81167,454
Spider Eye0.1746411,130
CreeperGunpowder1.002,81167,454
EndermanEnder Pearl0.501413,373
WitchGlass Bottle0.751052,530
Glowstone Dust0.751052,530
Gunpowder0.751052,530
Redstone0.751052,530
Spider Eye0.751052,530
Sugar0.751052,530
Stick0.751052,530

Mob Farm Tips

Spawning Mechanics

  • • Mobs spawn 24-128 blocks from the player
  • • Hostile mob cap is 70 per player
  • • Light level must be 0 for most hostile mobs
  • • Spawn attempts happen every tick (20/second)
  • • Spawners activate when player is within 16 blocks

Optimization Tips

  • • Build at Y=128+ for fastest despawn below
  • • Use water streams to move mobs quickly
  • • Carpet prevents other spawns around AFK spot
  • • Cave-free perimeter greatly increases rates
  • • Trident killers maintain player kill for XP