Material calculator
Gravel & crushed stone calculator
Estimate gravel or crushed stone for a driveway, path, or base layer — in cubic yards and in tons (how it's usually sold and delivered).
You'll need
7.3 tons
Crushed stone
- Volume
- 5.19 cubic yards
What this assumes
- Volume = 40 ft × 10 ft × 4.0 in, +5% for compaction.
- Tonnage uses ~1.4 tons per cubic yard for crushed limestone/gravel (≈2,800 lb/yd³).
Coverage rates & sources
Every number this calculator uses is a published engineering constant — not an estimate we made up. Here is exactly what it assumes and where each value comes from.
- Crushed stone density: ≈1.4 tons/yd³ (~2,800 lb/yd³)Source: Typical crushed limestone/gravel density (aggregate supplier data; varies 1.3–1.5 by stone)
- Cubic yard: 27 ft³Source: Unit conversion
Before you buy
- Density varies by stone type and moisture — confirm the exact tons-per-yard with your supplier.
- For a driveway, add a separate geotextile fabric and account for two compacted lifts.
- Rectangular areas only; split irregular shapes into rectangles and add them.
This is a planning estimate, not a substitute for a pro's on-site measurement. For load-bearing, structural, or code-regulated work, confirm quantities with a licensed contractor.
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