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Gravel Area & Volume Calculator

Calculate gravel by area in square feet, cubic feet and cubic yards. Enter length, width and depth for a full breakdown of the volume you need.

Gravel Area & Volume Calculator

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Gravel Area & Volume Calculator, live preview
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Enter values to see your estimate.

How to Calculate Gravel by Area

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.

Coverage per cubic yard by depth

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.

Area & Volume FAQs

How do I calculate gravel by square feet?
Find the area (length × width) in square feet, multiply by depth in feet for cubic feet, then divide by 27 for cubic yards.
How do I convert square feet to cubic yards of gravel?
Multiply square feet by depth-in-feet to get cubic feet, then divide by 27. Depth matters, the same area needs more gravel when deeper.
How many cubic feet in a cubic yard?
27 cubic feet make one cubic yard.
How much area does a cubic yard cover?
108 sq ft at 3 inches deep, 81 sq ft at 4 inches, and 54 sq ft at 6 inches.

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