Calculate shards, experience, and profit from crushing bones
Bone Crushing Calculator
About Bone Shards
Bone shards are obtained by using a bone crusher on bones, giving Prayer experience. Each bone type yields different amounts of shards and experience. Bone shards can be offered at the Dark Altar for additional Prayer experience or sold on the Grand Exchange.
Calculation Results
Total Bone Shards
1,500
Prayer Experience
1,500
Estimated Profit
90,000
900 GP/bone
Time Required
7.5 min
12K XP/hour
Efficiency Notes
- This method is profitable with current prices
- Consider using a bone crusher for convenience
- Offering shards at Dark Altar provides bonus XP
Optimize Your Prayer Training
Compare different bone types and methods to maximize your GP/XP ratio.
Detailed Calculation Results
Bone Crushing Results
Total Bone Shards
1,500
Per Bone
15
Prayer Experience
1,500
Total: 1,500 XP
Per Bone
15 XP
Estimated Profit
90,000 GP
900 GP/bone
ROI
300%
Time Required
7.5 min
12K XP/hour
Efficiency
High
Cost Breakdown
Bone Cost
30,000 GP
Shard Value
120,000 GP
Time Value
0 GP
Net Profit
90,000 GP
Prayer Level Progress
Current Level: 50
You will gain 1,500 Prayer experience.
Progress to Next Level
45,000 / 100,000 XP (45%)
Level After Crushing
You will remain at level 50 after this activity.
Profit Visualization
Efficiency Metrics
Bone Type Comparison
| Bone Type | Shards | XP | GP/XP | Profit/Bone |
|---|---|---|---|---|
| Bones | 10 | 4.5 | 12.2 | -20 |
| Big Bones | 15 | 15 | 13.3 | +90 |
| Dragon Bones | 25 | 72 | 28.5 | +150 |
| Baby Dragon Bones | 20 | 30 | 20.0 | +120 |
| Superior Dragon Bones | 40 | 150 | 66.7 | -200 |
| Wyvern Bones | 30 | 72 | 55.6 | -100 |
Best Bones for Profit
Dragon Bones
Best balance of XP and profit
Big Bones
Good profit for low-level players
Baby Dragon Bones
Moderate profit, good XP
Profit Comparison
Method Efficiency
Bone Crushing Methods
Bone Crusher
How to Obtain
Purchase from the Mage of Zamorak in the Wilderness for 50,000 GP or get as a reward from the Mage Training Arena.
How it Works
When equipped in your ammo slot, the bone crusher automatically crushes bones dropped by monsters you kill, granting Prayer experience and bone shards.
Benefits
Saves inventory space, automatic operation, no time spent manually crushing bones.
Manual Crushing
How to Do It
Use a pestle and mortar on bones in your inventory to crush them into bone shards.
Requirements
Pestle and mortar (purchasable from various Herblore shops for a few coins).
Considerations
Takes time to manually crush each bone, but allows you to process bones obtained from various sources.
Using Bone Shards
Dark Altar Offering
Location
The Dark Altar is located in the Wilderness (level 19-20), east of the Ferox Enclave.
How it Works
Use bone shards on the Dark Altar to receive Prayer experience. Each shard gives 1 Prayer XP, with a 50% bonus when offering noted shards.
Benefits
Higher Prayer XP per shard than simply crushing bones, especially with noted shards.
Selling on Grand Exchange
Market Value
Bone shards typically sell for 70-100 GP each on the Grand Exchange, depending on demand.
When to Sell
Sell bone shards when prices are high, typically during peak player hours or when new content increases demand.
Considerations
Selling shards provides immediate profit but forgoes the Prayer experience from using them at the Dark Altar.