Potting Soil Calculator

Your details

Interior length of the bed or planter box.
in
Interior width of the bed or planter box.
in
How deep you want to fill with soil (not necessarily the full height of the container).
in
If you have multiple identical containers, enter the count here.
pots
Potting soil compresses after watering. Adding 10% is the industry standard; use 15-20% for loose mixes like peat-heavy blends.
Standard retail bag sizes. 1.5 cu ft is the most widely sold size in the US.
Optional: leave 0 to skip the cost estimate.
USD
Soil volumeMedium project
1.47cu ft

Total potting soil needed, including the settling allowance.

Volume (cubic yards)0.054cu yd
Volume (litres)41.5L
Bags needed1bags
Approx. dry weight110lb
Estimated cost12USD
Volume (cu ft)1.47
Bags needed1

You need 1.47 cu ft of potting soil (1 bag).

  • You need about 1.47 cubic feet (42 litres) of potting soil.
  • That is 1 bag at 1.5 cu ft each, estimated at $12.00 total.
  • A 10% settling allowance is already included. Soil compresses after the first watering, so buying a little extra prevents having to top up.

Next stepPick a high-quality potting mix rated for your plant type. Mixes labelled for vegetables retain moisture better; cactus mixes drain faster.

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