OSRS Prayer Calculator
Estimate prayer training costs and bones needed with popular altar methods.
Training Targets
XP Needed: 13,034,431
Bones & Method
Price Settings
Use live GE prices
Results
2,896,541
Bones Offered
Expected Bones Used2,896,541
XP per Bone4.5
Total Cost0
Cost per XP0.00
Prices update every 2 hours*
Last updated: Unknown
*Based on OSRS Wiki GE prices.
Live price not found. Using manual price instead.
How this calculator works
Prayer XP depends on the bone type and the altar multiplier. Chaos altar offers the same XP as a fully lit gilded altar but saves bones on average.
Bones Needed = ceil(XP Needed / (Bone XP * Method Multiplier))
FAQ
What does Chaos altar save rate mean?
On average, half the bones are saved, so the expected cost is lower than gilded altar.
Why is cost per XP different between methods?
Higher multipliers reduce the bones needed for each level, lowering total costs.
Can I override prices?
Yes, set a manual price and toggle live prices off.
OSRS Prayer Calculator Guide
Compare prayer training methods, costs per XP, and budget-friendly routes.