Tan Leather is a Lunar spell which tans up to 5 hides in the player's inventory, with no extra gp cost like there would be with the normal process of tanning. However, in order to cast the spell, the player must have completed all of the easy, medium, and hard tasks of the Fremennik Diary.

With good timing, this spell tans around 8000 hides per hour, giving the player ~130K Magic experience per hour and can be used as a good method of money making.

As cowhide can be tanned into either soft leather or hard leather, it is possible to toggle between the two by right-clicking the spell icon.


Spell cost
5Fire rune1Nature rune2Astral rune583
Combo runes
1Nature rune2Astral rune5Lava rune578
1Nature rune2Astral rune5Smoke rune888
1Nature rune2Astral rune5Steam rune893
1Nature rune2Astral runeTome of fire558
1Nature rune2Astral runeLava battlestaff558
1Nature rune2Astral runeSteam battlestaff558
1Nature rune2Astral runeStaff of fire558
1Nature rune2Astral runeSmoke battlestaff558


The formula below, assumes you will be tanning 5 hides per spell, buying the dragonhides, nature rune, the astrals and will be casting the spell with a smoke/lava/fire/steam staff, or Tome of Fire

Hide Hide cost Leather price Profit/Loss per hide Tanner profit
Cowhide (Leather) 194 218 -87.6 23
Cowhide (Hard Leather) 194 229 -76.6 32
Green dragonhide 1,496 1,676 68.4 160
Blue dragonhide 1,814 2,009 83.4 175
Red dragonhide 2,404 2,639 123.4 215
Black dragonhide 3,162 3,400 126.4 218

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