Gravel Calculator

Use this free gravel calculator to estimate cubic yards and tons for a rectangular gravel area.

All tools

Research-backed assumptions Formula steps Examples included Private in-browser use

Length feetWidth feetDepth inchesTons per cubic yard

Gravel needed1.8518518519 yd3

20 ft x 10 ft x 3 in

Cubic feet: 50
Estimated tons: 2.5925925926
Density used: 1.4 tons/yd3

Compaction, moisture, stone type, and supplier density can change the real delivered amount.

Formula steps

Convert depth from inches to feet.
Multiply length, width, and depth for cubic feet.
Divide by 27 for cubic yards, then multiply by tons per cubic yard.

How to use the gravel calculator

Enter length, width, depth, and tons per cubic yard from your supplier when possible.
Press Estimate gravel to see cubic yards and estimated tons.
Adjust depth to compare path, pad, or driveway options.
Supplier density, compaction, and moisture can change tonnage.

Common uses

Estimate gravel for a path, pad, or driveway section.

Convert cubic feet into cubic yards.

Estimate tons from supplier density.

Check how changing depth changes material needs.

Examples

Driveway bed 20 ft x 10 ft x 3 in, 1.4 tons/yd3

Cubic yards and tons

Path 30 ft x 3 ft x 2 in

Material estimate

Parking pad 18 ft x 18 ft x 4 in, 1.5 tons/yd3

Bulk gravel estimate

Frequently asked questions

Plain-language answers about when to use the tool, what it does with your inputs, what to double-check, and how privacy works.

When should I use the Gravel Calculator?

Use it when your task matches one of these common needs: Estimate gravel for a path, pad, or driveway section. Convert cubic feet into cubic yards. It works best when you already know the values, dates, units, or settings the page asks for.

What is the Gravel Calculator doing with my inputs?

In plain language: The calculator converts depth from inches to feet, multiplies length by width by depth, divides by 27 for cubic yards, then multiplies by tons per cubic yard. The examples on the page are there so you can compare your inputs with a filled-out calculation before copying the answer.

What should I double-check before trusting the answer?

Stone type, compaction, moisture, supplier density, and delivery minimums can change the actual order amount. Also check that you used the right unit, date, scale, or mode because small input changes can change the result.

Does the site save what I enter?

No. The calculator runs in your browser tab. Your recent answers stay only on the page while you use it, and they are not sent to a server.