OSRS Compass

Prayer

OSRS Prayer Calculator

Compare bones and other offerings by XP, materials and cost, including the altar and saved-remains effects you use.

Your goal

Calculate actions to your target

Loading GE prices...

Loads your public Prayer level and exact XP. No login required.

Current
Target
XP remaining13,034,431
Account access
Equipment and method settingsStandard setup

Comparison

Prayer methods

0 methods shownEach offering is one XP-granting action. Saved remains reduce expected materials, not the action count.XP/hr assumes efficient training. See the skill guide for methods and equipment.
30
Blessed bone shardsBlessed bone shards
30
Blessed bone shards (Sunfire wine)Blessed bone shards
1
Big bonesRegular
1
Vile ashesAshes
1
Dragon bonesRegular
1
Infernal ashes (Demonic Offering)Ashes + Demonic Offering
70
Superior dragon bonesRegular
1
Ensouled dragon headEnsouled

Using the result

Offerings and bones used can differ

The altar changes XP per offering. The Chaos altar and Zealot robes can save remains, so the expected supply count can be lower than the number of offerings. Bring a little flexibility for random saves rather than treating the average as a guarantee.

The Chaos altar’s supply estimate does not include bones lost to players. For bone shards, match the row to ordinary blessed wine or sunfire wine and include the wine preparation in your session time.

How the numbers work

XP and quantities

Subtract current XP from target XP, divide by the method XP value, then round up to the next whole action.

Level status only checks the skill level. Quests, spellbooks, equipment, area access and other requirements may still apply.

GP values

GE input cost uses average instant-buy prices for supported tradeable materials. Five-minute averages are used first, with one-hour averages filling missing prices.