OSRS Drop Calculator › Empty oyster

Best way to farm Empty oyster

All 4 monsters that drop Empty oyster, 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: Empty oyster on the OSRS Wiki

Currently fastest method
Rock Crab
12 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Rock Crab
Combat lvl 13
3/128 · 1
1/128 · 3
 0.047 14 257 12
Sand Crab
Combat lvl 15
3/128 · 1
1/128 · 3
 0.047 17 212 9.9
Ammonite Crab
Combat lvl 25
3/128 · 1
1/128 · 3
 0.047 26 138 6.5
Hermit crab
Combat lvl 19
3/128 · 1
 0.023 20 180 4.2
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.