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Gravel Calculator
This estimate uses a typical compacted gravel density of 1.4 tons per cubic yard.Enter your measurements
Volume in cubic yards × 1.4 tons, plus 10% allowance.
How this estimate works
Volume in cubic yards × 1.4 tons, plus 10% allowance.
Measure twice and use the same unit throughout. Product coverage, material density, installation patterns, and local requirements can change the quantity you need.
Quick answer
Estimate gravel by finding compacted volume in cubic yards, multiplying by the supplier's tons-per-yard figure, and adding an allowance. The built-in estimate uses 1.4 tons per cubic yard and 10% extra.
Worked example
A 20 × 4 ft path at 3 inches deep is 20 ft³, or 0.74 yd³. At 1.4 tons/yd³ plus 10%, the estimate is 1.14 tons.
Assumptions
- The area is rectangular and the entered depth is the compacted depth.
- Density is 1.4 tons per cubic yard.
- A 10% allowance covers ordinary variation, not major settlement.
Why does gravel density matter?
Crushed stone, pea gravel, and quarry products do not weigh the same, and moisture changes delivered weight. Replace the general density assumption with the supplier's conversion whenever it is available.
Should depth be measured before or after compaction?
Plan from the finished compacted depth. Loose material settles under compaction, so the delivery quantity may need a compaction factor supplied by the quarry or contractor.
How should irregular areas be handled?
Split curves and wider sections into simple rectangles, calculate each, then add them. Keep excavation, geotextile, drainage, and base-course requirements separate from the material quantity.
Last reviewed September 22, 2026. Source: USGS crushed stone statistics and information. Product instructions take priority over a general estimate.