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Gravel Calculator

Estimate how much gravel you need in seconds. Enter your area's length, width and depth and GravelWise instantly returns the volume in cubic yards, tons and bags — plus an estimated cost so you can budget your project with confidence.

Gravel Calculator

$
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cubic yards
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tons
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bags (0.5 ft³)
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est. cost
Your project, to scale
L W D

Enter dimensions to see your fill volume.

How to Calculate Gravel

Gravel volume comes from three numbers — length, width and depth. Change the calculator above and watch every figure and the diagram below update live.

Top-down view (area × depth)

W L depth 4"

Step 1 · Area

20 ft × 10 ft = 200 ft²

Step 2 · Volume (× depth, ÷ 27)

200 ft² × 0.33 ft ÷ 27 = 2.47 yd³

3.46
tons (× 1.4)
134
bags (÷ 0.5 ft³)

These figures update automatically as you change the calculator above.

Gravel coverage at a glance

Approximate coverage of one cubic yard of gravel at common depths.

Approximate coverage of one cubic yard of gravel at common depths.
DepthCoverage per yd³Relative coverage
1" 324 sq ft
100%
2" 162 sq ft
50%
3" 108 sq ft
33%
4" 81 sq ft
25%
6" 54 sq ft
17%
3 in
3"

At 3 inches deep, one cubic yard of gravel covers 108 sq ft.

Gravel calculators for every project

Each calculator is tailored to its job — pick the one that matches your project.

Frequently Asked Questions

How do I calculate how much gravel I need?
Multiply the area (length × width in feet) by the depth in feet to get cubic feet, then divide by 27 for cubic yards. The calculator above does this for you automatically.
How do I work out gravel in cubic yards?
Cubic yards = (length ft × width ft × depth ft) ÷ 27. For a 10 × 10 ft area at 3 inches deep that's roughly 0.93 cubic yards.
How do I calculate gravel in tons, and convert yards to tons?
Gravel weighs about 1.4 tons per cubic yard, so multiply your cubic yards by ~1.4 to get tons. The calculator converts yards to tons for you.
How much does a cubic yard of gravel weigh?
A cubic yard of dry gravel weighs roughly 2,400–2,900 lbs (about 1.2–1.45 tons), depending on stone size and moisture.
How much gravel do I need for a driveway?
Measure length × width and use a 4–6 inch depth for driveways. A 20 × 10 ft driveway at 4 inches needs about 2.5 cubic yards.
How much pea gravel do I need?
Pea gravel is calculated the same way (area × depth). One cubic yard covers about 100 sq ft at 3 inches deep; use 2–3 inches for paths and ground cover.
How many bags of gravel do I need?
A standard 0.5 cu ft bag covers about 2 sq ft at 3 inches deep, and one cubic yard equals roughly 54 bags. Enter your area and the calculator estimates the bag count.
How much does gravel cost?
Gravel typically runs $15–$75 per cubic yard, or $1–$3 per bag, before delivery. Multiply your calculated volume by your local price per yard.
How deep should a gravel layer be?
Use 2–3 inches for decorative ground cover and paths, and 4–6 inches for driveways or areas that carry vehicle weight.