OSRS Drop Calculator › Curved bone

Best way to farm Curved bone

All 99 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. 6 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
Giant frog (Level 13)
Combat lvl 13
1/5,012.5 · 1
 1 per 5,013 kills 8 450 1 per 11 hrs
Hill Giant
Combat lvl 28
1/5,012.5 · 1
 1 per 5,013 kills 10 360 1 per 14 hrs
Lizard
Combat lvl 42 · Slayer 22
1/5,012.5 · 1
 1 per 5,013 kills 11 327 1 per 15 hrs
Sourhog
Combat lvl 37
1/5,012.5 · 1
 1 per 5,013 kills 11 327 1 per 15 hrs
Mogre
Combat lvl 60 · Slayer 32
1/5,012.5 · 1
 1 per 5,013 kills 13 277 1 per 18 hrs
Cave horror
Combat lvl 80 · Slayer 58
1/5,012.5 · 1
 1 per 5,013 kills 14 257 1 per 19 hrs
Cyclops (Ardougne Zoo)
Combat lvl 56
1/5,012.5 · 1
 1 per 5,013 kills 15 240 1 per 21 hrs
Nail beast
Combat lvl 69–141
1/5,012.5 · 1
 1 per 5,013 kills 15 240 1 per 21 hrs
Frenzied ice troll runt
Combat lvl 74
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Ice troll runt (Variant 1)
Combat lvl 74
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Ice troll runt (Variant 2)
Combat lvl 74
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Icelord
Combat lvl 51
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Khazard Ogre
Combat lvl 63
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Moss giant (Regular)
Combat lvl 42–48
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Ogre
Combat lvl 53–63
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Ogre chieftain
Combat lvl 81
1/5,012.5 · 1
 1 per 5,013 kills 16 225 1 per 22 hrs
Cyclops (Catacombs of Kourend)
Combat lvl 56–76
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Cyclops (Warriors' Guild Rooftop)
Combat lvl 56–76
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Giant Champion
Combat lvl 56
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Giant skeleton (Shadow Dungeon)
Combat lvl 80
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Ice giant (Regular)
Combat lvl 53
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Ice troll
Combat lvl 120–124
1/5,012.5 · 1
 1 per 5,013 kills 18 200 1 per 25 hrs
Frenzied ice troll female
Combat lvl 82
1/5,012.5 · 1
 1 per 5,013 kills 19 189 1 per 26 hrs
Frenzied ice troll grunt
Combat lvl 102
1/5,012.5 · 1
 1 per 5,013 kills 19 189 1 per 26 hrs
Frenzied ice troll male
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. They’re all superior slayer monsters: they only appear randomly (~1 in 200 kills) while you’re on a slayer task.

Monster Drops (rarity · quantity) Avg/kill
Ancient Custodian
Combat lvl 239 · Slayer 76
1/5,012.5 · 1
 1 per 5,013 kills
Basilisk Sentinel
Combat lvl 358 · Slayer 60
1/5,012.5 · 1
 1 per 5,013 kills
Cave abomination
Combat lvl 206 · Slayer 58
1/5,012.5 · 1
 1 per 5,013 kills
Elder aquanite
Combat lvl 305 · Slayer 78
1/5,012.5 · 1
 1 per 5,013 kills
Mutated Tortoise
Combat lvl 247 · Slayer 56
1/5,012.5 · 1
 1 per 5,013 kills
Night beast
Combat lvl 374 · Slayer 90
1/5,012.5 · 1
 1 per 5,013 kills
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.