Topsoil Calculator

Getting your topsoil measurements right is the first step to a thriving, healthy lawn. If you order too little, your new turf will struggle to root in properly; order too much, and you are simply spending more money than you need. To make shopping for topsoil and compost is as straightforward as possible, we have put together this handy visual guide to help you calculate exactly how much topsoil your garden project requires.

Understanding Your Topsoil Requirements

Calculating the right amount of topsoil comes down to two key measurements: your garden's total square meterage and your required soil depth. Read our guide on How to Measure Your Garden for more help. The ideal depth depends entirely on the project; simple levelling usually requires a shallow layer of 25mm to 50mm, while building a new lawn over poor ground needs a much deeper foundation of 100mm to 150mm. Multiplying your total area by this depth gives you the exact cubic volume required.