Crushed Rock Calculator
Calculate the amount of crushed rock needed for your project based on dimensions and depth.
Published by:
isCalculator Editorial Team
Was this calculator helpful?
How to use this tool?
This calculator estimates the amount of crushed rock needed for a rectangular area in cubic yards, including a waste factor for overages.
- Enter Length (ft) – The length of the area in feet.
- Enter Width (ft) – The width of the area in feet.
- Enter Depth (in) – The desired depth of crushed rock in inches.
- Enter Waste Factor (%) – A percentage to account for compaction and spillage (default is 10%).
- Click Calculate.
Result: The total cubic yards of crushed rock needed, rounded up to two decimal places. The formula used is shown below the result for verification.
All inputs must be positive numbers. Depth is in inches; length and width are in feet (imperial units).
Previous Results
| Result | Inputs | Date |
|---|
Frequently Asked Questions
For a 10x10 area at 3 inches deep with 10% waste, you need approximately 1.03 cubic yards.
The waste factor accounts for spillage, compaction, and uneven surfaces. Typically 5-10% is added to the calculated volume.
Yes, the same formula applies for any bulk material measured in cubic yards, such as gravel, sand, or soil.