Gravel Calculator
Work out how much gravel you need to cover an area to a given depth.
Gravel by volume and weight
Gravel is spread to a depth over an area, so the quantity is a volume — and because it is heavy, it is often ordered by weight too. This works out the volume you need from the area and depth, so you can order the right amount for a path, driveway or bed.
Enter the area and depth to see the gravel required.
Depth for the purpose, and ordering by weight
The right depth depends on the job. A decorative bed needs only a shallow layer, while a driveable surface needs a deeper base to bear weight and not scatter and rut under tyres. Get the depth right for the use and the coverage follows. Because gravel is dense, suppliers frequently sell it by weight, so it helps to convert your volume into an approximate tonnage — the density varies by stone type, but it gives a figure to order against.
Gravel Calculator FAQ
How deep should gravel be?
A shallow layer for a decorative bed, but a deeper base for a driveway or path that has to bear weight without rutting.
Why is gravel sold by weight?
Because it is dense, suppliers often sell by the tonne, so converting your volume to an approximate weight helps you order.
Is anything uploaded?
No. The calculation happens in your browser.