How to Calculate Gravel
What is Gravel?
A gravel calculator determines how much gravel, crushed stone, or pea gravel you need for a project area. It calculates volume in cubic yards or cubic feet and converts to weight (tons) — the unit gravel is typically sold in.
Step-by-Step Guide
- 1Volume = Length (ft) × Width (ft) × Depth (ft) / 27 = cubic yards
- 2Typical coverage depth: driveways 3–4", paths 2–3", drainage 6–12"
- 3Weight: gravel weighs ~2,800 lbs/yd³ (1.4 tons/yd³)
- 4Compaction: gravel compacts 10–15%, so order ~15% extra
Worked Examples
Input
Driveway 20 ft × 10 ft × 4 in deep
Result
≈ 2.47 tons of gravel needed
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