OSRS Drop Calculator › Jar of Decay

Best way to farm Jar of Decay

All 1 monster that drop Jar of Decay, 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: Jar of Decay on the OSRS Wiki

Currently fastest method
Vorkath (Post-quest)
1 per 136 hrs
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Vorkath (Post-quest)
Combat lvl 732
1/3,000 · 1
 1 per 3,000 kills 163 22 1 per 136 hrs
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.