Topsoil & Compost Calculator
Calculate exactly how much topsoil, compost, or bark you need for your raised beds, borders, and lawns.
Enter Measurements
Results
Total Volume:
0.00 m³
Total Litres Needed:
0 L
Standard Bags (50L):
0 bags
Bulk Bags Needed:
(Assuming ~750L per bulk bag)
0.0 bags
We recommend rounding up slightly and allowing a small percentage for natural settling off the soil.
Frequently Asked Questions
How deep should topsoil be for a new lawn?
For a new seeded or turfed lawn, you ideally need a minimum of 100mm to 150mm (4 to 6 inches) of good quality, screened topsoil to allow roots to establish quickly.
How deep should topsoil be in raised beds?
Raised beds for vegetables usually require depths of 200mm to 300mm. A mix of 60% topsoil and 40% organic compost is highly recommended for strong crop yields.
What is the difference between topsoil and compost?
Topsoil is the uppermost layer of earth, containing minerals and clay for structural support. Compost is decomposed organic matter used as a rich fertilizer to add nutrients into existing soil or topsoil.
How much does a bulk bag of topsoil weigh?
A standard bulk bag of screened topsoil typically weighs around 800kg to 900kg, depending on how wet it is.