Disclaimer

Last updated: September 26, 2026

Estimates, Not Guarantees

Gravel Calculator gives estimates based on the measurements you enter, standard conversion formulas and typical weights for each gravel type. Actual amounts can differ because of measuring errors, uneven ground, the exact stone your supplier sells, moisture and how much the gravel compacts. We recommend adding the default 10% extra and confirming quantities with your supplier.

Weights Vary by Supplier

Gravel weight per cubic yard or cubic metre changes with rock type, size and moisture. Wet gravel can weigh noticeably more than dry gravel. When buying by weight, ask your supplier for their own density figure and use the Custom density option in the calculator.

Not Professional Advice

Depth and material suggestions on this Site are general guidance for common projects. They are not a substitute for advice from an engineer, builder or landscaper. For driveways carrying heavy vehicles, slab and building foundations, drainage systems, retaining structures and children’s play surfaces, get professional advice and follow local regulations and safety standards.

Prices and Costs

Any cost shown by the calculator is based only on the prices you enter. We do not set or check supplier prices, delivery fees or taxes.

Advertising

This Site is supported by advertising, including ads served by Google AdSense. Ads are chosen by the ad network, not by us, and showing an ad is not an endorsement of the product or company.

External Links

We may link to other websites for extra information. We do not control those websites and are not responsible for their content or accuracy.

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