S3 Pricing Calculator

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Verified by: David Chen, OSRS Efficiency Analyst & Strategy Guide Author

Last Updated: October 2023 | Expert reviewed for mechanical accuracy.

Planning your journey to level 99 Prayer in Old School RuneScape? Use our professional prayer calculator osrs to determine exactly how many bones or ashes you need based on your training method, whether you are using the Chaos Altar, Gilded Altar, or Ectofuntus.

Prayer Calculator OSRS

Bones Needed for Goal: 0 XP Remaining: 0

Prayer Calculator OSRS Formula

Bones Needed = (Target XP – Current XP) / (Base XP × Multiplier)

Formula Source: Official OSRS Wiki – Prayer Training

Variables:

  • Current XP: Your existing experience points in the Prayer skill.
  • Target Level: The level you wish to reach (Level 99 is 13,034,431 XP).
  • Base XP: The experience granted by burying the bone normally.
  • Multiplier: The bonus granted by specific training methods (e.g., 350% at an altar).

What is Prayer Calculator OSRS?

The prayer calculator osrs is a specialized utility tool for players of Old School RuneScape. Prayer is one of the most expensive skills to train in the game, requiring thousands of dragon bones or superior bones to reach the prestigious level 99.

Because training methods like the Chaos Altar or Ectofuntus provide massive experience multipliers, calculating the exact inventory requirement is crucial for cost management and efficiency. This tool automates those complex calculations for you.

How to Calculate Prayer Calculator OSRS (Example)

  1. Identify your Current XP (e.g., 1,000,000 XP).
  2. Choose a Target Level (e.g., 99 which is 13,034,431 XP).
  3. Subtract Current XP from Target XP to find the XP Gap (12,034,431 XP).
  4. Select your bone (e.g., Dragon Bones provide 72 base XP).
  5. Apply the multiplier (e.g., Gilded Altar 3.5x = 252 XP per bone).
  6. Divide the XP Gap by the XP per bone (12,034,431 / 252 ≈ 47,756 bones).

Frequently Asked Questions (FAQ)

Is the Chaos Altar better than the Gilded Altar?

Mechanically, they provide the same 3.5x multiplier. However, the Chaos Altar has a 50% chance to not consume a bone, effectively doubling your XP per bone on average, though it is located in the Wilderness.

How much XP is level 99 Prayer?

Reaching level 99 requires exactly 13,034,431 experience points.

Do Bonecrushers provide bonus XP?

No, the Bonecrusher provides the standard burial XP automatically. It does not benefit from Altar multipliers.

What is the fastest Prayer XP in OSRS?

Offering Superior Dragon Bones at a Chaos Altar or Gilded Altar is currently the fastest viable training method in the game.

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