Free Gravel Calculator
Calculate how much gravel you need in cubic yards, cubic feet and US tons from area and depth. Free, fast, and works entirely in your browser with no sign-up required.
Updated
Gravel coverage
Extra material for cuts, spillage and breakage.
Gravel needed
1.94
cubic yards
- Volume
- 52.5cubic feet
- Approximate weight
- 2.72US tons
How this is calculated
volume ft³ = area × (depth ÷ 12); cubic yards = ft³ ÷ 27; tons ≈ yd³ × 1.4
- Crushed stone and pea gravel weigh roughly 1.4 US tons per cubic yard when dry.
- Wet or compacted material weighs more; suppliers vary, so confirm the rate before ordering by weight.
- A 2–3 in depth suits walkways; driveways usually want 4 in or more over a compacted base.
Frequently Asked Questions
How does the Gravel Calculator work?
It applies the formula volume ft³ = area × (depth ÷ 12); cubic yards = ft³ ÷ 27; tons ≈ yd³ × 1.4. Enter your measurements and the result updates instantly in your browser — nothing is uploaded and no sign-up is needed.
Why should I include a waste allowance?
Offcuts, spillage, breakage and an uneven sub-base all consume material that the raw geometry does not account for. The default allowance is deliberately modest; increase it for complex layouts, and remember that running short usually costs more in a second delivery than the surplus did.
Are the results exact?
They are a close estimate, not a guarantee. Crushed stone and pea gravel weigh roughly 1.4 US tons per cubic yard when dry. Real materials vary by supplier, moisture content and compaction, so confirm the rate with your supplier before placing a large order.
Is this tool free?
Yes, completely free with no registration. All calculations happen client-side in your browser.
Does it work on mobile?
Yes. The calculator is fully responsive and works on phones and tablets in any modern browser — useful when you are measuring on site.
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About the Gravel Calculator
The Gravel Calculator converts an area and a depth into the gravel volume you need, in cubic yards for bulk delivery and in US tons for suppliers who sell by weight. Enter your measurements and the result updates as you type — there is nothing to submit and nothing to wait for.
Everything runs in your browser. Nothing you enter is sent to a server, there is no sign-up, and there is no usage limit.
Who it's for
Anyone laying a driveway, path or drainage bed, and landscapers pricing a delivery.
How the calculation works
volume ft³ = area × (depth ÷ 12); cubic yards = ft³ ÷ 27; tons ≈ yd³ × 1.4
The result depends on a few standard constants, which are stated on the page rather than hidden:
- Crushed stone and pea gravel weigh roughly 1.4 US tons per cubic yard when dry.
- Wet or compacted material weighs more; suppliers vary, so confirm the rate before ordering by weight.
- A 2–3 in depth suits walkways; driveways usually want 4 in or more over a compacted base.
Getting an accurate estimate
Measure twice. Small errors in a linear dimension compound, because material volume scales with two or three of them at once — a 6-inch error across a 20-foot run is over a cubic foot of material on a 4-inch pour.
Keep the waste allowance. The default is deliberately conservative: offcuts, spillage, uneven sub-base and breakage are all real, and running short mid-job usually costs more in a second delivery than the surplus did.
Round up when you order. Suppliers sell in fixed increments — quarter yards, whole bags, full boxes — so treat the figure here as the minimum you need rather than the exact amount to buy.