Need to know how much soil to fill your planter? Use our quick soil calculator to work it out in seconds.
Just enter the length, width, and height of the inside of your planter box (in centimetres), and we’ll tell you how many litres of soil you’ll need - no guessing, no wastage.
Quick tip: Take 10cm off when measuring the height of Tiltwood raised planter boxes.
Learn more about filling your New Zealand brought planter here.
Soil Volume Calculator
Planter Box Soil Calculator (Metric)
You need liters of soil to fill this planter box.
This is approximately standard 40L bags of soil.
How to Measure:
Measure the inside of the planter for best results
Use centimetres (cm) — the calculator will do the rest
Leave space at the top if you’re topping with mulch or compost
Soil Buying Tip:
Most garden centres sell soil by the litre or cubic metre (1m³ = 1000L). Once you calculate the total litres, divide by 1000 to see how many cubic metres you need.
Learn more about getting the right potting mix here.