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Driveway Gravel Calculator

Plan a driveway gravel layer using depth, loose-material allowance and supplier density.

Your project measurements

ft
ft
in
lb/ft³
%
$

Results update as you type. U.S. units. Defaults are editable planning examples. Use product labels and supplier specifications.

Your material plan

Enter your measurements to see your plan.

A quantity estimate, not a supplier quote. Confirm order increments, delivery and project specifications.

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How this calculation works

Enter measurements above to see the worked calculation.

Volume is not weight

Cubic yards describe space; U.S. short tons describe weight. A short ton is 2,000 pounds. Multiply cubic feet by the supplier’s bulk density in pounds per cubic foot, then divide by 2,000. The same volume can weigh different amounts depending on aggregate, moisture and compaction.

Match the density to the material condition

The density fields are editable examples, not measured values for your supplier’s product. When estimating a compacted driveway layer, use an appropriate loose-volume allowance and loose bulk density together. Do not add a second compaction allowance after this tool already includes it.

Plan one layer at a time

The example driveway is 40 by 12 feet at a finished depth of 4 inches. Net volume is 160 cubic feet. A 10% loose-volume allowance gives 176 cubic feet, or 6.5185 cubic yards. Base and surface layers may use different material and depth; run the calculator separately for each and label the outputs.

Make the estimate your own

Measure the actual area, choose your product and update the allowance. Costs use the price you enter. Delivery, tax, labor and preparation are excluded unless this tool has a separate field for them. The result rounds whole packages up; displayed decimal quantities are not supplier order increments.

Before you order

  • Check dimensions and units, including depth and openings.
  • Confirm the selected product’s coverage, yield or density.
  • Ask your supplier about package sizes, minimum orders and delivery access.
  • Keep a copy of your measurements with your material plan.

Method v1.0 · Updated October 12, 2026. Read our methodology.