Gravel planning guide

How Much Gravel Do I Need?

Quick answer: multiply project area by gravel depth to get volume, convert cubic feet to cubic yards, then add an allowance for compaction and uneven grade. One cubic yard covers about 162 ft² at 2 in, 108 ft² at 3 in, or 81 ft² at 4 in before extra material.

Calculate your exact gravel order

Enter dimensions, depth and extra material to compare cubic feet, cubic yards, approximate tons and bag equivalents.

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Gravel cubic yards by area and depth

Area2 in deep3 in deep4 in deep
50 ft²0.31 yd³0.46 yd³0.62 yd³
100 ft²0.62 yd³0.93 yd³1.23 yd³
150 ft²0.93 yd³1.39 yd³1.85 yd³
200 ft²1.23 yd³1.85 yd³2.47 yd³
250 ft²1.54 yd³2.31 yd³3.09 yd³
300 ft²1.85 yd³2.78 yd³3.70 yd³
400 ft²2.47 yd³3.70 yd³4.94 yd³
500 ft²3.09 yd³4.63 yd³6.17 yd³
750 ft²4.63 yd³6.94 yd³9.26 yd³
1000 ft²6.17 yd³9.26 yd³12.35 yd³

Gravel yards to tons

Weight varies by aggregate, gradation and moisture. For a rough planning comparison only, the table below uses 1.4 tons per cubic yard. If you already know your cubic yards or tons and need a weight conversion, use the Cubic Yards to Tons Gravel Calculator, where you can enter the density for your material.

ProjectCubic yardsApprox. tons
200 ft² at 2 in1.231.73
500 ft² at 3 in4.636.48
750 ft² at 4 in9.2612.96
1000 ft² at 3 in9.2612.96

Gravel formula

Cubic yards = area (ft²) × depth (in) ÷ 12 ÷ 27. For rectangular projects, area is length × width. For irregular areas, split the project into simple shapes and add their areas before applying depth.

Example: 500 ft² at 3 inches

At 3 inches deep, 500 ft² requires about 4.63 cubic yards of net gravel. At the rough 1.4-ton-per-yard planning conversion, that is approximately 6.48 tons before extra material.

Choose the right gravel calculator

Use the Gravel Calculator when you need volume from project dimensions. Use the Cubic Yards to Tons Gravel Calculator when you already have a volume or weight and need to convert between yards and tons. For material-specific project estimates, use the Paver Base Calculator, Pea Gravel Calculator, or River Rock Calculator.

Frequently asked questions

How many yards of gravel do I need?

Multiply area in square feet by depth in feet, then divide cubic feet by 27. Add an allowance for compaction, uneven grade and waste before ordering.

How many tons are in a cubic yard of gravel?

There is no single exact conversion because aggregate type, particle size and moisture change density. For planning, this guide shows 1.4 tons per cubic yard as a rough example only; use your supplier’s stated density for ordering.

How much area does one cubic yard of gravel cover?

One cubic yard covers about 162 square feet at 2 inches deep, 108 square feet at 3 inches deep, or 81 square feet at 4 inches deep before compaction and waste.

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