Gravel calculator
Gravel Calculator
Estimate gravel volume and tonnage for a rectangular area and depth.
Results
- Cubic feet
- 66.67 cu ft
- Cubic yards
- 2.47 cu yd
- Cubic yards including waste
- 2.72 cu yd
- Estimated tons
- 3.80 tons
Uses 1.4 tons per cubic yard.
Save this calculation to a project estimate.
What this calculator does
Enter length, width, and depth to estimate gravel volume in cubic feet and cubic yards for a rectangular area.
The calculator also shows a waste-adjusted cubic yard value and a tonnage estimate for early supplier conversations.
Formula used
Cubic feet equals length times width times depth converted from inches to feet. Cubic yards equal cubic feet divided by 27. Waste is applied to cubic yards, then estimated tons use 1.4 tons per cubic yard.
Tonnage estimate
Estimated tons use an assumption of 1.4 tons per cubic yard for this milestone calculation.
Material density varies
Actual gravel density varies by stone type, gradation, compaction, and moisture, so confirm supplier conversion requirements. Depth can also change after compaction.
Frequently asked questions
- How do I enter gravel depth?
- Enter depth in inches. The calculator converts inches to feet before calculating cubic feet.
- How deep should gravel be?
- Depth depends on the project and site conditions. Use the depth required for your plan or supplier recommendation rather than treating a generic value as a rule.
- Is the tonnage estimate exact?
- No. It uses 1.4 tons per cubic yard as a planning assumption. Ask the supplier for the conversion used for the specific material.