Gravel Calculator
Estimate how much gravel you need for a driveway, pathway or garden project. Enter the length, width and desired depth — the calculator reports volume in cubic metres and cubic yards, plus the estimated weight in tonnes.
Enter project details
Enter project details, then press Calculate gravel.
Gravel formulas
Volume = length × width × depth
Weight = volume × density
Common depths
- Decorative paths: 5 cm (2 in)
- Garden borders: 5–8 cm (2–3 in)
- Light-use driveways: 10 cm (4 in)
- Heavy-use driveways: 15 cm (6 in) over a base layer
Related calculators
Frequently asked questions
Depends on the type. Standard gravel: ~1,500 kg (1.5 tonnes). Pea gravel: ~1,350 kg. Crushed stone and road base can be 1,600–1,700 kg. The calculator uses the density you select from the dropdown.
Yes, for most garden and driveway applications. A woven geotextile membrane stops weeds and stops the gravel sinking into the soil. It does not affect the gravel volume calculation — just measure the area and add the membrane to your shopping list.