Gravel Calculator
Calculate the volume and weight of gravel for an area and depth, in cubic metres and tonnes.
How to use it
- Enter the area Length and width in metres.
- Set the depth How deep the layer should be, in centimetres.
- Read volume and weight In cubic metres and tonnes.
Examples
| 5×3 at 5 cm | 0.75 m³ |
|---|---|
| ×1.5 | ~1.13 t |
About this tool
Ordering gravel, sand or aggregate means converting an area and depth into a volume, then into a weight so suppliers can quote by the tonne. This calculator does both: enter the area and depth, and it returns the cubic metres and tonnes required.
Different materials have different densities, so adjust that figure for sand, ballast or decorative stone as needed. Add a little extra for settling and spillage. Everything is computed in your browser.
Frequently asked questions
What density should I use?
Gravel is roughly 1.5 tonnes per cubic metre; sand is around 1.6. Suppliers often state the exact density for their product.
How deep should gravel be?
For a path or driveway, about 5 cm of decorative gravel over a base is typical. Check guidance for your specific use.
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Updated June 14, 2026