Home Calculators Gravel & topsoil calculator Gravel & topsoil calculator: tonnes and bulk bags Enter your area and depth. You get cubic metres, tonnes and bulk bags, and if you're digging out first, the skip size you need.
Material
20mm gravel 10mm pea gravel Topsoil
Lengthm Widthm Depthmm 50mm paths, 40–50mm drives over sub-base
Digging the area out first?
No Yes — size a skip
Area 15.0 m²
Volume 0.75 m³
Weight 1.20 t
Bulk bags 2 Shopping list
2 x 20mm Shingle / Gravel Bulk Bag (approx 800kg) 1 x Weed Control Membrane 1.5m x 25m Uses about 1.6 t per m³ and roughly 0.8 t per bulk bag — bag sizes vary by merchant.
Add to materials list How it works 1 Pick gravel or topsoil and a rectangle or circle. 2 Enter the size and how deep you want it. 3 Turn on digging out to see how much spoil you'll have and which skip fits. 4 Add the bags to your list and compare prices. Material prices for this job Now find the cheapest place to buy Take your quantities across to Price Planter and compare them across UK builders' merchants — including whether splitting the order across two merchants works out cheaper.
Compare material prices Quantities are typical trade allowances and a guide only — always confirm with your tradesperson or supplier before ordering.
All Price Planter calculators