Gravel Driveway Calculator

Free result — no account.

Formula

Cubic yards = (L × W × depth_in / 12) ÷ 27. Tons ≈ yards × 1.4 (varies by rock).

Worked example

40×12 ft, 4 in deep → about 5.9 yd³ ≈ 8.3 tons.

Length (ft) Width (ft) Depth (in) Tons per yd³

Source & last checked

Aggregate bulk density charts

Last checked: 2026-09-25

FAQ

Is this exact?

No — estimates only. Verify official sources.

Do you store my numbers?

No — it runs in your browser.

Can I embed this?

Yes — use the embed box below.

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