Garden Soil Calculator
Estimate soil volume and bags for raised beds or planters from their dimensions and fill depth.
Set your values
Adjust the values, then calculate your result.
How to use Garden Soil Calculator
- Enter the measurements or amounts in the fields above.
- Check that dimensions, rates and units match the labels.
- Select “Calculate soil” to see a clear estimate and the formula used.
How the garden soil calculator works
Soil volume in litres = length × width × depth in centimetres × 10. Divide by bag volume and round up.
Check your measurements and assumptions
For multiple beds, add their areas or calculate each separately. Soil settles and bag volumes are nominal, so consider a small extra amount for topping up.
Review the estimate before you act
Compare this result with an independent measurement, supplier quote or institution guidance when the decision matters. Confirm that the units and assumptions match the labels above, and update the inputs when the conditions change. Keep a note of the values used so you can reproduce the estimate later. This calculator is a planning aid and does not replace professional, product-specific or local guidance.
How many litres of soil fit in a raised bed?
Multiply the inside length and width in metres by fill depth in centimetres, then multiply by ten.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.