OSRS Drop Calculator › Grubby key

Best way to farm Grubby key

All 5 monsters that drop Grubby key, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed.

Drop data: Grubby key on the OSRS Wiki

Currently fastest method
Sarachnis
3.4 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Sarachnis
Combat lvl 318
1/15 · 1
 0.067 71 51 3.4
Baby red dragon
Combat lvl 48
1/80 · 1
 0.013 14 257 3.2
Temple Spider
Combat lvl 75
1/100 · 1
 0.01 16 225 2.2
Red dragon
Combat lvl 152
1/50 · 1
 0.02 34 106 2.1
Undead Druid
Combat lvl 105
1/75 · 1
 0.013 31 116 1.5
How this is calculated: items/hr = (3600 ÷ seconds per kill) × average items per kill. Each monster's drop lines are listed as the wiki shows them (rarity · quantity); the average adds them all up, each as rarity × average quantity × rolls — so a guaranteed drop plus a rarer bonus drop both count. Drop rates and quantities come from the OSRS Wiki's community-verified drop tables. Seconds-per-kill is an editable estimate based on each monster's hitpoints and defence — your real speed depends on your stats and gear, so adjust it and your edits are remembered on this device. Rates marked ~ are approximate on the wiki.

Something wrong on this page?

Drop rates come from the OSRS Wiki and kill times are estimates, so mistakes happen. Tell us what's off and it'll be looked at.