OSRS Prayer Calculator

The OSRS Prayer Calculator estimates the total Prayer experience and items required to reach your target level. Simply enter your current Prayer level, target Prayer level, and training method to calculate the experience needed and number of bones or items required. This calculator helps Old School RuneScape players plan their Prayer training more efficiently.

Enter your current Prayer level (1 to 98)
Enter your goal Prayer level (2 to 99)
Choose your preferred bone type and offering method

This calculator is for informational purposes only. Values are based on official Old School RuneScape experience tables and may not account for in-game bonuses or events. Verify with in-game data for precise planning.

What Is Total Prayer Experience Required

Total Prayer Experience Required is the amount of experience points needed to train your Prayer skill from one level to another in Old School RuneScape. Prayer is a combat skill that unlocks useful prayers and bonuses for fighting. This calculation tells you exactly how much experience you need to gain and how many bones or items you must offer to reach your target level.

How Total Prayer Experience Required Is Calculated

Formula

XP(L) = floor( (1/4) × sum from n=1 to L-1 of floor( n + 300 × 2^(n/7) ) )

Where:

  • L = Prayer level (the level you want to reach)
  • XP(L) = Total experience points needed to reach level L
  • n = Each level counted in the sum from 1 to L minus 1
  • Total XP Required = XP(Target Level) minus XP(Current Level)
  • Items Required = Total XP Required divided by XP per item, rounded up

The formula adds up experience for each level using a curve that grows faster as levels get higher. First, the calculator finds the total experience needed for your current level. Then it finds the experience for your target level. The difference is how much experience you need to gain. Finally, dividing by the experience per bone gives you the number of items needed. This matches the exact experience curve used in Old School RuneScape.

Why Total Prayer Experience Required Matters

Knowing the exact experience and items needed helps you plan your training and budget. Prayer is one of the most expensive skills to train in Old School RuneScape. Understanding the costs before you start can save you time and gold.

Why Planning Prayer Training Is Important for Efficient Leveling

Training Prayer without a plan can waste large amounts of gold. Different training methods give vastly different experience rates. The gilded altar method gives 3.5 times more experience per bone than burying. Players who calculate ahead can choose the most cost-effective method for their budget and avoid running out of bones halfway to their goal.

For Budget-Conscious Players

Players with limited gold may prefer cheaper bones or the Chaos Altar in the Wilderness. The Chaos Altar gives 7 times experience but comes with player-killer risk. This calculator helps budget players compare total costs by showing exact item counts needed for each method.

For Fast Experience Goals

Players focused on maximum speed may choose Superior Dragon Bones at a gilded altar or ensouled heads at the Dark Altar. These methods cost more gold but require fewer clicks and less time. The calculator shows how many items are needed so players can buy in bulk and train without interruptions.

Example Calculation

A player wants to train Prayer from level 43 to level 70 using Dragon Bones at a gilded altar. The current level is 43 and the target level is 70. Dragon Bones at a gilded altar give 252 experience points per bone.

The calculator finds the experience needed for level 43 is 48,486 XP. The experience needed for level 70 is 737,627 XP. Subtracting these gives 689,141 XP required. Dividing by 252 XP per bone gives 2,735 bones needed, rounded up to the nearest whole bone.

Result: Total XP Required: 689,141 XP. Items Required: 2,735 Dragon Bones.

This tells the player they need to offer 2,735 Dragon Bones at a gilded altar to reach level 70 Prayer. They can use this number to estimate costs by checking current Grand Exchange prices. At approximately 2,000 gold per Dragon Bone, this training goal would cost around 5.5 million gold.

Frequently Asked Questions

Who is this OSRS Prayer Calculator for?

This calculator is for any Old School RuneScape player who wants to train Prayer efficiently. It helps both new players planning their first Prayer levels and experienced players aiming for level 99. Anyone who wants to know the exact cost and time investment before starting can benefit from this tool.

What is the fastest way to train Prayer in OSRS?

The fastest methods are using Superior Dragon Bones at a gilded altar or ensouled dragon heads at the Dark Altar. The Chaos Altar in the Wilderness offers the best experience per bone but carries the risk of player killers. Your best choice depends on your budget and risk tolerance.

Does this calculator account for bonus experience?

This calculator uses base experience values for each training method. It does not include bonuses from special events, Prayer outfits, or other temporary boosts. Players using such bonuses may need slightly fewer items than shown in the results.

Can I use this calculator if I have a Prayer level higher than 99?

Prayer maxes at level 99 in Old School RuneScape. This calculator is designed for levels 1 through 99. Virtual levels above 99 exist in game but do not provide additional benefits, so they are not included in this calculation.

References

  • Old School RuneScape Wiki - Prayer Skill Guide
  • Jagex Ltd. - Official Old School RuneScape Experience Tables
  • Old School RuneScape Wiki - Experience Formula Documentation

Calculation logic verified using publicly available standards.

View our Accuracy & Reliability Framework →