Home & Garden
Gravel Calculator
Enter area dimensions, depth, and gravel density to estimate volume in cubic feet and yards, weight in tons, and cost. Dimensions accept feet or metres; outputs stay imperial, the way suppliers sell. An estimate — confirm density with your yard.
Last updated: September 30, 2026
Your result · Estimated weight
1.5tons
- Volume
- 30cu ft
- Volume
- 1.11cu yd
- Estimated cost
- $75.00
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What your result means
Estimated weight in tons is the headline: what the truck must carry and what the yard charges for. Volume in cubic feet and yards helps you sanity-check against supplier quotes.
If the weight looks surprising, recheck depth — one extra inch over a driveway adds a large fraction of a ton.
How the calculation works
- Convert all dimensions to feet and multiply for cubic feet, dividing by 27 for cubic yards.
- Multiply volume by density for pounds, dividing by 2,000 for tons.
- Multiply tons by price per ton for the material cost.
Formula
Formula
volume = length × width × depth; weight = volume × density ÷ 2000; cost = tons × price
- Volumelength × width × depth (converted to feet)
- Cubic yardscubic feet ÷ 27
- Weightcubic feet × density (lb/ft³) ÷ 2000
- Costtons × price per ton
Worked examples
Example: 10×12 ft at 3 in, density 100, $50/ton
- dimUnit: ftlength: 10width: 12depthUnit: indepth: 3density: 100pricePerTon: 50
Result: Volume 30 · Volume 1.11 · Estimated weight 1.5 · Estimated cost $75.00
Example: 3×4 m at 10 cm, density 100, $45/ton
- dimUnit: mlength: 3width: 4depthUnit: cmdepth: 10density: 100pricePerTon: 45
Result: Volume 42.4 · Volume 1.57 · Estimated weight 2.12 · Estimated cost $95.35
Assumptions
What this calculation takes for granted — check these before relying on the result.
Assumptions:
Limitations
Why your real figure may differ:
Frequently asked questions
How deep should driveway gravel be?
3–4 inches compacted over a prepared base is the common residential target. Less migrates and ruts; much more wastes material unless the base is soft.
How many tons are in a cubic yard of gravel?
About 1.4 tons at typical 100 lb/ft³ density (27 cu ft × 100 ÷ 2000). Denser or wetter stone runs heavier — confirm with your supplier.
Why does density matter so much?
You buy by weight but spread by volume. A 10% denser stone needs 10% more tons for the same coverage, so the default is only a starting point.
Should I add extra for compaction?
Yes — order roughly 10–15% over the compacted-depth figure if you are placing loose and rolling it, and round up to the yard’s minimum load.