About Gravel Calculator

Why We Built This Site

Ordering gravel sounds simple until you try it. Suppliers sell by the ton, most people measure in feet, and UK and Australian yards talk in tonnes and cubic metres. On home improvement forums, the same stories come up again and again: a driveway that ran short and needed a second delivery fee, a pile of leftover stone with nowhere to go, or the wrong type of gravel that never packed down.

Most online gravel calculators only handle a simple rectangle and one type of stone. We wanted a tool that answers the real questions people ask before they order: how many yards, how many tons, how many bags, which gravel to use, and how much it will cost.

What Makes Our Calculator Different

• Every common shape: rectangles, circles, rings around trees, triangles, trapezoids, L-shapes and several areas added together.
• Driveway layers: a base layer and a top layer worked out separately, because that is how driveways are really built.
• Real gravel types: pea gravel, #57 stone, crusher run, MOT Type 1, road base, river rock and more, each with its own weight.
• Answers people can use: bags, bulk bags, wheelbarrow loads and truck loads, not just cubic yards.
• Worldwide units: imperial and metric, with gravel names and bag sizes for the US, UK, Ireland, Canada, Australia and New Zealand.
• Quote comparison: compare supplier prices per ton, per yard or per bag to find the real cheapest option.

Where Our Numbers Come From

The volume maths uses standard, exact conversions: 27 cubic feet in a cubic yard, 0.7646 cubic metres in a cubic yard, 2,000 lb in a US ton and 1,000 kg in a metric tonne.

Gravel weights are typical loose, dry values based on figures published by US aggregate suppliers and quarries, with matching metric values for the UK, Ireland and Australia. Real stone varies with rock type and moisture, so we always show weights as estimates and tell you to check with your supplier for large orders. Depth guidance follows common landscaping and driveway building practice.

How We Keep It Accurate

Every calculation is tested against worked examples before we publish a change. For example, 24 ft x 14 ft at 6 inches deep must give 6.22 cubic yards, and a 5 m x 5 m area at 40 mm must give 1.0 cubic metre. When a reader reports a problem or a supplier figure changes, we check it and update the tool and this site.

Who Uses Gravel Calculator

Homeowners planning a path, patio or driveway, landscapers pricing a job, contractors checking base material for a slab or shed pad, and anyone who wants to double-check a supplier quote before paying for a delivery.

Independent and Free

Gravel Calculator is free to use and needs no sign-up. The site is supported by advertising. We do not sell gravel, and no supplier pays to change our results or advice.