Gravel Calculator
Gravel is sold by the ton, so you need your area × depth in feet ÷ 27 for cubic yards, then × 1.4 tons per yard. Enter your area and depth to get tons, cubic yards, and cost.
How to estimate gravel
Find the area by multiplying length by width, multiply by the depth in feet, and divide by 27 for cubic yards. Multiply cubic yards by the density — about 1.4 tons per yard — because suppliers sell and deliver gravel by weight.
How deep to go
Depth depends on the job: 2–3 inches for decorative top stone, 4 inches for walkways, and 4–6 inches of compacted base for a driveway that carries vehicles. For just the volume of a fill, use the cubic yard calculator.
Ordering and cost
Gravel is priced per ton delivered, plus a haul fee. Round up — material compacts as it settles. Planning pavers over the gravel? The paver calculator sizes the base and bedding sand for you.
Frequently asked
How much gravel do I need?
Multiply area by depth in feet, divide by 27 for cubic yards, then multiply by about 1.4 to get tons. A 20×10 ft area at 3 inches deep needs roughly 2.6 tons.
How deep should gravel be?
Use 2–3 inches for a top dressing, 4 inches for walkways and patios over a base, and 4–6 inches (or more) of compacted stone for driveways.
How many tons are in a cubic yard of gravel?
About 1.4 tons per cubic yard for typical crushed stone, though it ranges from 1.3 to 1.7 depending on the rock and moisture.