OSRS Drop Calculator › Iron bar

Best way to farm Iron bar

All 18 monsters that drop Iron bar, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed. 1 other source isn’t ranked; see why below.

Drop data: Iron bar on the OSRS Wiki

Currently fastest method
Iron dragon (Standard)
439 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Iron dragon (Standard)
Combat lvl 189–215
Always · 5
 5 41 88 439
Sulphur Lizard
Combat lvl 50 · Slayer 44
4/128 · 6–10 noted
 0.25 13 277 69
White Knight (Level 38)
Combat lvl 38
8/128 · 2
2/128 · 1
 0.141 14 257 36
White Knight (Level 36)
Combat lvl 36
6/128 · 2
2/128 · 1
 0.109 14 257 28
White Knight (Level 39)
Combat lvl 39
6/128 · 2
2/128 · 1
 0.109 14 257 28
White Knight (Level 42)
Combat lvl 42
5/128 · 2
2/128 · 1
 0.094 15 240 22
Dwarf
Combat lvl 7–20
3/128 · 1
 0.023 5 720 17
Paladin
Combat lvl 62
9/128 · 1
 0.07 15 240 17
Sir Carl
Combat lvl 62
9/128 · 1
 0.07 15 240 17
Sir Harry
Combat lvl 62
9/128 · 1
 0.07 15 240 17
Sir Jerro
Combat lvl 62
9/128 · 1
 0.07 15 240 17
Thug
Combat lvl 10
3/128 · 1
 0.023 7 514 12
Skeleton Mage (Level 83)
Combat lvl 83
5/128 · 1–2
 0.059 19 189 11
Rockslug
Combat lvl 29 · Slayer 20
3/128 · 1
 0.023 8 450 11
Black Guard (Level 25)
Combat lvl 25
3/128 · 1
 0.023 9 400 9.4
Giant skeleton (Shadow Dungeon)
Combat lvl 80
5/128 · 1
 0.039 18 200 7.8
Pirate
Combat lvl 23–57
1/128 · 1
 1 per 128 kills 7 514 4
Pirate (Thieving)
Combat lvl 52
1/128 · 1
 1 per 128 kills 11 327 2.6

Other sources (not ranked)

Giant rockslug is a superior slayer monster: it only appears randomly (~1 in 200 kills) while you’re on a slayer task. So it’s not included in the ranking above.

Monster Drops (rarity · quantity) Avg/kill
Giant rockslug
Combat lvl 86 · Slayer 20
3/128 · 1 (3 rolls)
 0.07
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.