Topsoil Calculator

Each square metre (10.5 square feet) of planting area will require 2 x 35L bags of topsoil.

e.g. A planting area 6m long x 1m wide will require 24 bags of toposil

This is presuming a 5cm (2 inch) depth of topsoil which is a rough average if using the topsoil to backfill a large area a greater quantity of topsoil will be required.