Gravel Calculator
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Calculate gravel volume, tonnes, and bag count from area, depth, aggregate type, and waste factor.

Before you order

- Measure the finished area after edging or borders are planned.
- Choose depth based on the intended use, not only appearance.
- Confirm aggregate density and bag size with the supplier.
- Compare small bags, bulk bags, and loose delivery for larger jobs.

When this estimate may be wrong

- Uneven ground, compaction, and sub-base requirements can change the final quantity.
- Irregular shapes need separate area measurements or a conservative allowance.
- Driveways and load-bearing areas may need construction guidance beyond decorative gravel depth.

Before ordering gravel

Check depth for the intended use, measure irregular areas carefully, and compare small bags with bulk-bag or loose-load delivery.

Disclaimer

This is an estimate. Site conditions, compaction, and aggregate type can change the final quantity.