Gravel Calculator

Estimate gravel needed in cubic feet, yards, meters, and tons for any project.

Formula & Methodology

Volume = area × depth; cubic yards = cubic feet / 27; tons = cubic yards × density (tons per cubic yard).

Worked Example

A 100 sq ft path covered 2 inches deep with gravel at 1.4 tons/yd³ needs about 0.86 tons.

Frequently Asked Questions

How deep should gravel be?

A 2–4 inch layer is typical for paths and driveways; deeper layers resist rutting better.

How is tonnage estimated?

The volume in cubic yards is multiplied by the gravel density, commonly 1.4–1.7 tons per cubic yard depending on the type.

Should I order extra?

Yes. Add 5–10% for settling and uneven subgrade.

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