Raised-bed soil volume calculator

Enter the bed size and the depth you plan to fill. Imperial uses feet for length and width and inches for depth; metric uses metres and centimetres.

Raised-bed soil volume

Optional, 0 to 50. Fresh soil and compost settle after filling.

Enter the volume printed on the bag to estimate how many to buy.

Limitations

  • It assumes one rectangular bed filled to one even depth. Sloped, curved or tiered beds need a different method.
  • It calculates volume only. It does not say what mix your plants need.
  • Bag volumes are the printed size. Compaction, moisture and rounding mean real quantities vary, so keep a little spare.