fill pots without guessing
Potting Soil Calculator
Estimate how many product bags are needed for round containers using their inside dimensions. Free to use. No account required.
your details
How do you want to calculate?
Use the exact package label for this material. A featured brand reference is not available here yet.
your result
Potting mix volume
7.8 ft³
2 ft³ bags
4 bags
Models each container as a cylinder and includes 10% extra. Tapered pots usually use slightly less.
Find a garden centerThis result uses the package values you entered. Confirm the current product label before buying or applying anything.
how this calculator works
Estimate potting mix from inside container dimensions
Container labels and outside dimensions can overstate the usable soil volume. Enter the inside diameter, actual fill depth, and number of pots, then calculate against a selected package size.
- 1Measure the inside diameter of the pot.
- 2Measure only the depth you will fill with mix.
- 3Enter the number of matching containers.
- 4Choose the exact potting-mix package or enter your own bag volume.
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