Estimate how many tons of road base or crushed stone to order for a driveway or path, with compaction and waste. Enter your values; the result updates as you type, with the method shown below.
Formula
Tons = L × W × depth × (1 + extra) × density
Worked example
10 m × 3 m × 15 cm at 2.1 t/m³ + 10%: about 10.4 t.
Frequently asked questions
What density should I use?
Compacted road base is about 2.0–2.2 t/m³.
How thick?
10–15 cm for paths, 20–30 cm for driveways.
Why add 10%?
For compaction and waste.
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Results are estimates for information only. Check important figures with a professional.