ToolStaxx guide
How much soil for a raised bed
Calculate raised-bed soil from length, width and depth so you can estimate litres or bulk bags before buying.
Quick answer
Calculate raised-bed soil from length, width and depth so you can estimate litres or bulk bags before buying.
How to do it
- Measure internal length and width.
- Choose fill depth in millimetres.
- Volume m³ = length × width × depth in metres.
- Litres = cubic metres × 1000.
Worked example
A 2 m × 1 m bed at 300 mm deep has a base area of 2 m² and a volume of 0.6 m³, or 600 litres.
Common mistakes
- Entering depth in metres when the field expects millimetres.
- Forgetting soil can settle after filling.
- Not allowing for existing soil level, drainage material or uneven beds.
When this is not suitable
Do not treat any quick estimate as a final specification where safety, contracts, regulations or expensive purchases depend on it.
Related next tools
Next useful garden tools for this outdoor estimate.
Keep the result together
Use the calculator first, then add the result to a Project Sheet if you need a clean printable summary.
Open Project Sheet Builder