OSRS Drop Calculator › Brimstone key

Best way to farm Brimstone key

All 140 monsters that drop Brimstone key, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed. 26 other sources aren’t ranked; see why below.

Drop data: Brimstone key on the OSRS Wiki

Currently fastest method
Kraken
2.3 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Kraken
Combat lvl 291 · Slayer 87
1/49 · 1
 0.02 32 112 2.3
Sulphur Nagua
Combat lvl 98 · Slayer 48
1/80 · 1
 0.013 22 164 2
Aberrant spectre
Combat lvl 96 · Slayer 60
1/82 · 1
 0.012 23 157 1.9
Frost Nagua
Combat lvl 104 · Slayer 48
~1/79 · 1
 0.013 25 144 1.8
Kurask
Combat lvl 106 · Slayer 70
1/79 · 1
 0.013 25 144 1.8
Nechryael
Combat lvl 115 · Slayer 80
1/77 · 1
 0.013 26 138 1.8
Gargoyle
Combat lvl 111 · Slayer 75
1/78 · 1
 0.013 27 133 1.7
Zygomite (Level 86)
Combat lvl 86 · Slayer 57
1/111 · 1
 1 per 111 kills 19 189 1.7
Wyrm
Combat lvl 97 · Slayer 62
1/80 · 1
 0.013 29 124 1.6
Dust devil (Regular)
Combat lvl 93–110 · Slayer 65
1/87 · 1
 0.011 27 133 1.5
Earthen Nagua
Combat lvl 128 · Slayer 48
1/76 · 1
 0.013 31 116 1.5
Greater Nechryael (Regular)
Combat lvl 200 · Slayer 80
1/64 · 1
 0.016 37 97 1.5
Lava Strykewyrm
Combat lvl 116 · Slayer 62
1/77 · 1
 0.013 31 116 1.5
Chilled jelly
Combat lvl 112 · Slayer 52
1/78 · 1
 0.013 31 116 1.5
Warped Jelly
Combat lvl 112 · Slayer 52
1/78 · 1
 0.013 31 116 1.5
Dharok the Wretched
Combat lvl 115
1/97 · 1
 0.01 25 144 1.5
Guthan the Infested
Combat lvl 115
1/97 · 1
 0.01 25 144 1.5
Torag the Corrupted
Combat lvl 115
1/97 · 1
 0.01 25 144 1.5
Verac the Defiled
Combat lvl 115
1/97 · 1
 0.01 25 144 1.5
Mutated Bloodveld
Combat lvl 123 · Slayer 50
1/76 · 1
 0.013 32 112 1.5
Turoth
Combat lvl 83–89 · Slayer 55
1/125 · 1
 1 per 125 kills 20 180 1.4
Vyrewatch
Combat lvl 87–125
1/133 · 1
 1 per 133 kills 19 189 1.4
Blue dragon
Combat lvl 111
1/98 · 1
 0.01 26 138 1.4
Dagannoth Supreme
Combat lvl 303
1/60 · 1
 0.017 43 84 1.4
Ahrim the Blighted
Combat lvl 98
1/100 · 1
 0.01 26 138 1.4

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
Abhorrent spectre
Combat lvl 253 · Slayer 60
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Basilisk Sentinel
Combat lvl 358 · Slayer 60
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Blood-starved venator
Combat lvl 246 · Slayer 74
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Choke devil
Combat lvl 264 · Slayer 65
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Colossal Hydra
Combat lvl 309 · Slayer 95
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Greater abyssal demon
Combat lvl 342 · Slayer 85
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Guardian Drake
Combat lvl 376 · Slayer 84
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Insatiable Bloodveld
Combat lvl 202 · Slayer 50
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Insatiable mutated Bloodveld
Combat lvl 278 · Slayer 50
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
King kurask
Combat lvl 295 · Slayer 70
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Magma strykewyrm
Combat lvl 249 · Slayer 62
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Marble gargoyle
Combat lvl 349 · Slayer 75
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Monstrous basilisk
Combat lvl 135 · Slayer 40
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Mutated Terrorbird
Combat lvl 178 · Slayer 56
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Mutated Tortoise
Combat lvl 247 · Slayer 56
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Nechryarch (Greater)
Combat lvl 300 · Slayer 80
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Nechryarch (Normal)
Combat lvl 300 · Slayer 80
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Night beast
Combat lvl 374 · Slayer 90
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Nuclear smoke devil
Combat lvl 280 · Slayer 93
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Repugnant spectre
Combat lvl 335 · Slayer 60
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Shadow Wyrm
Combat lvl 259 · Slayer 62
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Spiked Turoth
Combat lvl 244 · Slayer 55
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Vitreous Chilled Jelly
Combat lvl 241 · Slayer 52
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Vitreous Jelly
Combat lvl 206 · Slayer 52
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Vitreous Warped Jelly
Combat lvl 241 · Slayer 52
Always · 1
 1 Superior: only appears randomly (~1 in 200 kills) while on a slayer task
Skotizo
Combat lvl 321
1/56 · 1
 0.018 Needs a dark totem (3 pieces from Catacombs monsters) for every kill
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.