Gravel Calculator
Estimate the gravel needed for a driveway, path, or base layer. Enter the area and depth to get volume, weight in tons, and cost.
Results
Enter your measurements to see an estimate.
Calculated: — EasyBuildTools, www.easybuildtools.com
How to use the undefined
Enter the area length and width, plus the finished depth. Set a material density (crushed stone is around 100 lb/cu ft), a compaction allowance for the settling that happens when gravel is tamped, and a waste allowance. The tool returns volume, weight, and tons to order.
Formula and methodology
Volume (cu ft) = length × width × (depth÷12) × (1 + compaction%/100) × (1 + waste%/100). Weight (lb) = volume × density. Tons = weight ÷ 2000. Cubic yards = volume ÷ 27.
Worked example
Path: 20 ft × 10 ft × 4 in, density 100 lb/cu ft, 15% compaction, 5% waste. Base volume = 66.7 cu ft, adjusted ≈ 80.5 cu ft. Weight ≈ 8,050 lb = 4.0 tons. Enter the values above to confirm.
Helpful measurement tips
- Gravel is sold by weight (tons) but measured by volume — density links the two, so ask your supplier for their figure.
- Add compaction for base layers that will be tamped or driven on.
- A geotextile fabric under the gravel reduces sinking and long-term top-ups.