How is the gravel weight estimated?

Volume in cubic metres is multiplied by a typical loose-gravel bulk density of about 1.6 tonnes per cubic metre. Density varies by stone type and moisture, so treat the tonnage as a guide.

What depth of gravel should I use?

Around 40–50mm suits a decorative path, while a driveway sub-base is often laid thicker. Enter the depth your project calls for and the volume updates instantly.

Is anything uploaded?

No — all calculations run entirely in your browser and nothing is sent anywhere.

Gravel Calculator

Work out the volume and weight of gravel for any area.

Gravel calculator — volume, tonnes and cubic yards

A gravel calculator turns an area and depth into the amount of aggregate you need. Enter the length and width (metres or feet) and the depth in millimetres, and the tool returns the volume in cubic metres plus an estimate in tonnes and cubic yards.

The weight assumes a typical loose-gravel density of about 1.6 t/m³. Everything runs in your browser and nothing is uploaded.