About this calculator
Work out cubic metres and litres of mulch for beds and borders.
Use the average depth you actually plan to spread.
Formula
Volume = length × width × depth. Litres = cubic metres × 1,000.
Example
5m × 2m × 75mm = 0.75m³ = 750L.
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.