Base Gravel Calculator
Estimate base gravel volume, tonnage and delivery loads from area and depth.
Enter your project details
Each dimension can use its own unit—for example feet for length and inches for thickness. Package counts are rounded up.
Formula and calculation steps
Quantity = adjusted area ÷ product coverage; packages are rounded up.- Start with 120 ft² after openings.
- Add 10% allowance.
- Apply selected product coverage and round up.
Worked example
Use compacted depth and choose a local aggregate density if your supplier provides one.
How to use this calculator
- Enter area and compacted base depth.
- Set density if your supplier provides one.
- Review volume, tons and truck loads.
Example: Use compacted depth and choose a local aggregate density if your supplier provides one.
Questions about this calculator
Should depth be compacted or loose?
Use compacted design depth; loose fill settles and can under-deliver.
How big is a delivery load?
Loads vary by truck; the calculator shows tons so you can match your local hauler’s capacity.
Can I use mixed units?
Yes. Choose feet, inches, metres or centimetres and the calculator converts each input before calculating.
Is this a final material order?
No. Confirm drawings, product coverage, local code and site conditions before buying or building.
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<iframe src="https://www.buildcalclab.com/embed/gravel-calculator/?theme=light" width="100%" height="640" title="BuildWise calculator" style="border:0;max-width:720px"></iframe>Assumptions and references
Results are estimates based on the dimensions and values you enter. Verify final quantities, manufacturer coverage and site-specific requirements before ordering.
Last reviewed: July 2026 · Read our calculation methodology