Multiply length × width × depth of your area. For example, a 3m × 2m area at 50mm depth needs 0.3m³, which is approximately 480kg. Use our free gravel calculator above for exact figures based on your specific dimensions.
How deep should gravel be?
The recommended depth depends on use: 40-70mm for driveways, 30-50mm for paths and borders. Deeper coverage provides better ground coverage and lasts longer. Our calculator lets you adjust depth to see how it affects the total amount needed.
How much does a tonne of gravel cover?
At 50mm depth, one tonne of gravel covers approximately 12.5 square metres. At 30mm depth, it covers around 20 square metres. Coverage varies slightly by stone size and shape.
How do I convert gravel volume to weight?
Most decorative aggregates including gravel have a density of approximately 1,600 kg per cubic metre. So 1m³ weighs around 1.6 tonnes. Our calculator handles this conversion automatically.
What is the best gravel for a driveway?
For driveways, angular gravel in 10-20mm sizes provides the best stability and compaction. We recommend a depth of 50-70mm. Use our visualiser to preview different options in your actual driveway before buying.