OSRS Prayer Calculator
Enter your prayer training parameters and click "Calculate" to see results
Plan your OSRS Prayer training with bone counts, cost estimates & efficiency comparisons. Calculates XP for all altars with gear bonuses. Optimize your path to 99 Prayer.
OSRS Prayer Calculator Documentation
What is it?
The OSRS Prayer Calculator helps Old School RuneScape players plan their Prayer skill training by calculating bone requirements, costs, and efficiency for different training methods. It compares altar types, accounts for gear bonuses, and provides cost-effective strategies.
Key Formulas
- XP Needed:
Target XP - Current XP = Total XP Required - Effective XP/Bone:
Bone Base XP × Method Multiplier × (1 + Bonus %) - Bones Required:
ceil(Total XP Required / Effective XP per Bone) - Total Cost:
Bones Required × Bone GE Price
Formulas sourced from official OSRS Wiki mechanics and verified by player testing.
How to Use
- Set Current Level/XP: Select whether inputting by level or exact XP
- Choose Target: Define your goal level or XP amount
- Select Method: Pick your training altar/approach
- Add Bonuses: Check applicable gear (Zealot set)
- Pick Bones: Choose from available bone types
- View Results: See calculations and compare options
Terminology
- Gilded Altar: Best non-PVP method (350% XP)
- Wilderness Altar: Risky but efficient (300% XP)
- Ectofuntus: Slow but highest XP (400%)
- Zealot Set: +1.25% XP per piece (saves bones)
- GP/XP: Gold per experience point (cost efficiency)
FAQs
Q: Which method is fastest?
A: Wilderness Altar (but dangerous) → Gilded Altar → Ectofuntus
Q: What’s the cheapest way to 99?
A: Dragon bones at Gilded Altar balances cost/speed
Q: Do bonuses stack?
A: Yes - Zealot helm/robe top/bottom give +3.75% total
Q: Why different bone XP values?
A: Higher-level bones give more XP but cost more
Technical Notes
- Real-time GE prices via OSRS API
- Virtual levels (>99) calculated as XP
- Wilderness risk not factored in calculations
- Mobile-optimized responsive design