CONSTRUCTION
Gravel Driveway Depth & Tonnes
Gravel or crushed stone for a driveway by layer — sub-base, base, surface — from your depth, density and allowance: volume, tonnes, cost and truck loads.
Per-layer and total volume (bank and loose), tonnes and short tons, cubic yards, cost at your price per tonne, truck loads for your capacity, and a CSV of the layers.
Example: A 20 × 3.5 m drive with 150 mm sub-base (1 800 kg/m³, +20 %), 100 mm base (1 900, +15 %) and 40 mm surface (1 500): 23.5 m³ loose, 42.2 t, five 10-tonne loads.
Loading the workspace…
BUILT TO BE UNDERSTOOD
What Gravel Driveway Depth & Tonnes assumes.
No black-box numbers.
How the result is calculated
Describe the formula and its source.
What this utility does not do
State the limits plainly.
SOURCES
- Layer volume = area × depth; loose = × (1 + allowance); mass = loose × density; 1 short ton = 0.907 t; all depths, densities and allowances entered per layer
Last reviewed 21 September 2026. How results are checked: How we verify.