This Old School RuneScape (OSRS) Prayer Calculator determines the total Experience (XP) required and the exact number of bones needed to reach your target Prayer level, based on your chosen bone type and altar method.
OSRS Prayer Calculator
Detailed Calculation Steps
OSRS Prayer Calculator Formula
Total XP Needed = Target Level Cumulative XP - Current Level Cumulative XP
XP per Bone = Bone Base XP * Altar Multiplier
Bones Required = CEIL(Total XP Needed / XP per Bone)
Formula Source: OSRS Wiki – Prayer Guide | OSRS Wiki – Experience Table
Variables Explanation
- Current Prayer Level: Your character’s starting level for Prayer (1-99).
- Target Prayer Level: The level you wish to achieve (1-99).
- Bone Type: The specific item you will be offering (e.g., Dragon Bones, Wyvern Bones). This determines the base XP gained per offering.
- Altar / Method: The method used to offer the bones (e.g., Gilded Altar, Ectofuntus). This applies a multiplier to the base XP.
Related Calculators
What is the OSRS Prayer Calculator?
The Prayer skill in Old School RuneScape is critical for accessing powerful combat and utility boosting overhead prayers. Training Prayer is often considered one of the most expensive skills to train, as it primarily involves burying or offering bones and items at altars, consuming the items in the process.
This calculator simplifies the process of planning your training method. By inputting your current level, target level, bone of choice, and the method of offering (which provides an XP boost), you can instantly determine the exact total XP needed and, more importantly, the precise number of items you need to buy to reach your goal.
How to Calculate Prayer XP and Bones (Example)
- Define Levels: Start with level 60 Prayer, aiming for level 70 (for Piety).
- Find Cumulative XP: Use an OSRS XP table to find the cumulative XP required for Level 70 (737,627 XP) and Level 60 (273,742 XP).
- Calculate Total XP Needed: $737,627 – 273,742 = 463,885$ XP required.
- Determine XP per Bone: Choose Dragon Bones (72 Base XP) on a Gilded Altar (3.5x Multiplier). XP per Bone: $72 \times 3.5 = 252$ XP.
- Calculate Bones Required: Divide the total required XP by the XP per bone: $463,885 / 252 \approx 1840.89$. Since you can’t use partial bones, you need to round up. The final result is **1,841 Dragon Bones**.
Frequently Asked Questions (FAQ)
What is the fastest way to train Prayer in OSRS?
The fastest method is generally offering Superior Dragon Bones at a Gilded Altar with three burners, or using the Chaos Altar in the Wilderness (though this carries risk of player-killers). The Ectofuntus method is slightly slower but offers maximum XP per bone.
What is the maximum Prayer level?
The maximum achievable Prayer level is 99, which requires a total of 13,034,431 XP.
Does the Gilded Altar cost money?
Yes. While the bones provide the XP, the cost is in acquiring the bones and constructing/accessing the altar. The cost is the primary barrier to entry for high-level Prayer training.
What is the minimum level for the Piety prayer?
The Piety combat boosting prayer is unlocked at level 70 Prayer, which is a common and highly desired target level for players focusing on melee combat.