OSRS Drop Calculator › Hammerstone seed

Best way to farm Hammerstone seed

All 15 monsters that drop Hammerstone seed, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed. 2 other sources aren’t ranked; see why below.

Drop data: Hammerstone seed on the OSRS Wiki

Currently fastest method
Mammoth
15 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Mammoth
Combat lvl 80
20/640 · 4
 0.125 30 120 15
Head Guard
Combat lvl 84
1/107 · 3
 0.028 21 171 4.8
Sergeant (Shayzien)
Combat lvl 84
1/107 · 3
 0.028 21 171 4.8
Cyclops (Ardougne Zoo)
Combat lvl 56
1/232 · 3
 0.013 15 240 3.1
Obor (Members)
Combat lvl 106
1/143 · 3
 0.021 26 138 2.9
Tortoise (No riders)
Combat lvl 79
1/182 · 3
 0.016 26 138 2.3
Black Knight Titan
Combat lvl 120
1/154 · 3
 0.019 33 109 2.1
Tortoise (With riders)
Combat lvl 92
1/212 · 3
 0.014 29 124 1.8
Grimy Lizard
Combat lvl 50 · Slayer 44
1/567 · 3
 1 per 189 kills 18 200 1.1
Sulphur Lizard
Combat lvl 50 · Slayer 44
1/2,079 · 3
 1 per 693 kills 13 277 0.4
Skeleton (Lucien's camp)
Combat lvl 132
1/2,858 · 3
 1 per 953 kills 12 300 0.3
Skeleton (Shayzien Crypts)
Combat lvl 132
1/2,858 · 3
 1 per 953 kills 12 300 0.3
Zombie (Shayzien Crypts)
Combat lvl 132
1/2,858 · 3
 1 per 953 kills 12 300 0.3
Vyrewatch
Combat lvl 87–125
1/1,819 · 3
 1 per 606 kills 19 189 0.3
Moonlight Cockatrice
Combat lvl 49 · Slayer 25
1/3,056 · 3
 1 per 1,019 kills 14 257 0.3

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
Cockathrice
Combat lvl 89 · Slayer 25
1/114 · 3 (3 rolls)
 0.079
Giant rockslug
Combat lvl 86 · Slayer 20
1/220 · 3 (3 rolls)
 0.041
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.