Soil volume planning
Soil Calculator
Estimate how much soil you need from the area, fill depth, extra allowance and bag size.
Soil Calculator
Estimate how much soil you need from the area, fill depth, extra allowance and bag size.
Soil estimate
How the estimate works
Plan soil volume before you order
Measure the area
Enter the total surface you want to cover or fill with soil in square metres.
Set the fill depth
Enter the planned soil depth in centimetres. The required volume increases directly with depth.
Allow for settling
An extra percentage can provide a planning margin for settling, levelling and small measurement differences.
Convert volume to bags
Enter the bag volume in litres to estimate how many whole bags you need to purchase.
Frequently asked questions
What soil depth should I enter?
Enter the depth you plan to add or replace. The suitable depth depends on the project, existing soil and plants, so use the specification for your job.
Why add an extra allowance?
Loose soil can settle after spreading and watering. An allowance gives you a practical margin for settling, levelling and minor measurement differences.
Why is the number of bags rounded up?
Bagged soil is purchased in whole bags, so the calculator rounds up to the next complete bag.