Gravel Calculator

Estimate gravel volume, weight in tonnes, and cost for driveways and paths.

Area length (m)

Area width (m)

Depth (cm)

Gravel density (t/m³)

Price per tonne

Gravel needed (tonnes)

2.40

Last updated: 2026-08-31

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FAQ

What depth should a gravel driveway be?

New driveways need 10–15 cm after compaction; a top-up on an existing surface is fine at 3–5 cm.

Why 1.6 t/m³ for density?

Compacted gravel averages about 1.6 tonnes per cubic meter; crushed stone runs heavier, pea gravel lighter — adjust to your quarry's spec sheet.

How do I convert to cubic yards?

Divide cubic meters by 0.765 — or just read the volume line, since most suppliers now quote both.

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