OSRS Drop Calculator › Mossy key

Best way to farm Mossy key

All 4 monsters that drop Mossy 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: Mossy key on the OSRS Wiki

Currently fastest method
Bryophyta (Free-to-play)
8.3 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Bryophyta (Free-to-play)
Combat lvl 128
1/16 · 1
 0.062 27 133 8.3
Bryophyta (Members)
Combat lvl 128
1/16 · 1
 0.062 27 133 8.3
Moss giant (Regular)
Combat lvl 42–48
1/150 · 1
 1 per 150 kills 16 225 1.5
Moss Giant (Iorwerth Dungeon)
Combat lvl 84
1/120 · 1
 1 per 120 kills 28 129 1.1
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.