OSRS Drop Calculator › Curved bone

Curved bone

Best way to farm Curved bone

All 88 monsters that drop Curved bone, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed. 10 other sources aren’t ranked; see why below.

Drop data: Curved bone on the OSRS Wiki

Currently fastest method
Giant frog (Level 13)
1 per 11 hrs
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Combat lvl 13
1/5,012.5 · 1
 1 per 5,013 kills 8 450 1 per 11 hrs
Combat lvl 28
1/5,012.5 · 1
 1 per 5,013 kills 10 360 1 per 14 hrs
Combat lvl 42 · Slayer 22
1/5,012.5 · 1
 1 per 5,013 kills 11 327 1 per 15 hrs
Combat lvl 37
1/5,012.5 · 1
 1 per 5,013 kills 11 327 1 per 15 hrs
Combat lvl 60 · Slayer 32
1/5,012.5 · 1
 1 per 5,013 kills 13 277 1 per 18 hrs
Combat lvl 80 · Slayer 58
1/5,012.5 · 1
 1 per 5,013 kills 14 257 1 per 19 hrs
Combat lvl 56
1/5,012.5 · 1
 1 per 5,013 kills 15 240 1 per 21 hrs
Combat lvl 69–141
1/5,012.5 · 1
 1 per 5,013 kills 15 240 1 per 21 hrs
Combat lvl 74
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 74
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 74
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 51
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 63
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 42–48
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 53–63
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 81
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Combat lvl 56–76
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Combat lvl 56–76
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Combat lvl 56
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Combat lvl 80
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Combat lvl 53
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Combat lvl 120–124
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Combat lvl 82
1/5,012.5 · 1
 1 per 5,013 kills 19 189 1 per 26 hrs
Combat lvl 102
1/5,012.5 · 1
 1 per 5,013 kills 19 189 1 per 26 hrs
Combat lvl 82
1/5,012.5 · 1
 1 per 5,013 kills 19 189 1 per 26 hrs

Other sources (not ranked)

These also drop it but aren’t included in the ranking above. The reason is shown for each.

Monster Drops (rarity · quantity) Avg/kill Why not ranked
Combat lvl 239 · Slayer 76
1/5,012.5 · 1
 1 per 5,013 kills Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Combat lvl 358 · Slayer 60
1/5,012.5 · 1
 1 per 5,013 kills Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Combat lvl 206 · Slayer 58
1/5,012.5 · 1
 1 per 5,013 kills Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Combat lvl 305 · Slayer 78
1/5,012.5 · 1
 1 per 5,013 kills Superior: only appears randomly (~1 in 200 kills) while on a slayer task
1/5,012.5 · 1
 1 per 5,013 kills Chambers of Xeric raid monster, only fought inside the raid (a full raid takes around half an hour or more, and most loot comes from the reward chest)
Combat lvl 247 · Slayer 56
1/5,012.5 · 1
 1 per 5,013 kills Superior: only appears randomly (~1 in 200 kills) while on a slayer task
1/5,012.5 · 1
 1 per 5,013 kills Chambers of Xeric raid monster, only fought inside the raid (a full raid takes around half an hour or more, and most loot comes from the reward chest)
Combat lvl 374 · Slayer 90
1/5,012.5 · 1
 1 per 5,013 kills Superior: only appears randomly (~1 in 200 kills) while on a slayer task
1/5,012.5 · 1
 1 per 5,013 kills Chambers of Xeric raid monster, only fought inside the raid (a full raid takes around half an hour or more, and most loot comes from the reward chest)
Combat lvl 336–1195
1/5,012.5 · 1
 1 per 5,013 kills Theatre of Blood raid boss, only fought inside the raid (a full raid takes around half an hour or more, and most loot comes from the reward chest)

How this is calculated

Items per hour = kills per hour × average items per kill.

Average items per kill adds up every drop line as the wiki shows it (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 drop tables; rates marked ~ are approximate on the wiki. "via" means the item comes inside another drop, like red spiders' eggs in Sarachnis's giant egg sac.

Kill times are estimates, worked out the same way for every monster from its hitpoints and defence. Add your RuneScape name in Preferences and they're worked out from your own combat levels instead. We can't see your gear or include boss mechanics, so expect individual times to be off; what matters is how the monsters compare. You can type your own time for any monster: it's remembered on this device for every page (↺ goes back to the default), and shared anonymously to help improve the estimates (privacy).

Achievement diaries that improve a drop rate or quantity can be ticked in Preferences.

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.