Common question
How much gravel do I need?
Gravel is sold by the ton and by the cubic yard. This page converts the area and depth you enter into both, using the density you enter.
The result is an estimate of loose volume. Gravel compacts, so a finished depth can take more than the same depth of loose stone. The page does not add that compaction unless you increase the depth yourself.
About 6.22 tons for this area.
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How we calculated this
The area and depth become cubic yards. Tons equal cubic yards times the density you enter. A common planning density for gravel is 1.4 tons per cubic yard.
What does this mean?
You need about 6.22 tons, which is 4.44 cubic yards at this depth.
Your assumptions
Edit assumptions- Area
- 40.0 ft × 12.0 ft
- Depth
- 3.00 in
- Density
- 1.40 tons / cubic yard
This calculator provides an estimate for planning. Material yield, waste, prices, and local requirements may vary.
How the estimate is calculated
Cubic feet are length times width times depth. Depth is entered in inches and divided by 12. Cubic yards are cubic feet divided by 27.
Tons are cubic yards times the density in tons per cubic yard. The starting density is 1.4, a common planning weight. Wet stone and crushed rock do not weigh the same, so replace 1.4 if your supplier gives a different figure.
Open the Gravel Calculator · How this calculator works
Questions
How deep should the gravel be?
Paths are often a couple of inches. Driveways are often thicker. Enter the depth you intend to install.
Should I order tons or yards?
Ask the supplier which unit they sell. The page shows both from the same measurements.
Does this include edging or fabric?
No. It is the gravel volume and weight only.
Why might I need more than the result?
An uneven base and compaction both use extra stone. Add depth if you want that margin in the estimate.