gravelClassic tool
Gravel Calculator
Estimate area, gravel volume and weight with adjustable depth units and material density.
Estimate gravel volume before you order
Use this gravel calculator to size driveways, garden paths, drainage beds, patios and base layers without guessing. Enter length, width, depth and material density to get a quick estimate for both volume and weight.
What the calculator returns
The result includes total area, cubic meters, cubic yards, estimated weight in kilograms and metric tons, plus a rough count of 25 kg bags for smaller projects or retail purchases.
Why density matters
The default density of 1600 kg/m³ is a practical starting point for many gravel mixes, but actual weight changes with stone size, moisture and compaction. If your supplier gives a more specific density, replace the default for a tighter estimate.
Use clear inputs to get a more useful result.
Common gravel calculator questions
Should depth include compaction?
For ordering, use the finished depth you want and add a small buffer if the material will compact heavily or if the surface is uneven.
Can I use this for decorative stone too?
Yes. The geometry stays the same. What usually changes is density, so that is the field to adjust when you switch materials.
Why show cubic yards and cubic meters?
Suppliers do not always quote the same unit. Showing both helps you compare local and international gravel pricing without another conversion step.