Gravel Calculator

Gravel and crushed stone are sold by volume (brass, cubic feet) or by weight (tonnes). Enter the area and depth to find both.

Measure in
About 1.5 to 1.7 for gravel and crushed stone.
Results update as you type.

Gravel needed

1.89 m³ (66.7 cft)

0.67 brass

Weight
3.02 tonnes

Order 5% to 10% extra for compaction and spreading.

About this calculator

Typical depths are 2 to 4 inches for paths and 4 to 6 inches for driveways.

How to use it

  1. Choose feet or metres and enter the dimensions.
  2. Choose the mix or materials.
  3. Read the quantities to order.

The formula

Volume = length × width × depth; weight = volume × density
density
about 1.6 tonnes per m³ for gravel

Worked example

A 20 × 10 ft area, 4 inches deep

  1. Volume = 1.89 m³ (66.7 cft), 0.67 brass.
  2. Weight ≈ 3 tonnes.

What the result means

Order a little extra; gravel settles when compacted.

Assumptions

  • Even depth.

Limitations

  • Density depends on stone size and moisture.

Frequently asked questions

How much is 1 brass of gravel?

100 cft, about 2.83 m³ or 4.5 tonnes.

How deep should gravel be?

2 to 4 in for paths, 4 to 6 in for driveways.

Is gitti the same as gravel?

Gitti is crushed stone aggregate, used similarly.

Last reviewed on 3 October 2026. Found a mistake? Tell us.