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Garden

Container Volume Calculator

Container Volume Calculator

Find pot or planter volume in liters, gallons, and cubic inches from dimensions.

in
in
in

Results appear as you type.

How to use

  1. Select cylinder or box.
  2. Enter inside dimensions in inches.
  3. Read liters and US gallons for potting mix.

Formula

cylinder: V = π × (d/2)² × h
box: V = L × W × H
(all inches → cu in; ÷ 61.0237 = liters)

Examples

Example 1

10 in diameter × 8 in tall cylinder ≈ 10.3 L (2.7 gal).

Example 2

12×8×8 in box ≈ 12.6 L.

Assumptions

  • Uses inside dimensions; flared pots are approximated as cylinders.
  • 1 US gallon = 231 cu in.

FAQ

What shapes are supported?

Cylinder, rectangular box, and cone-style inputs depending on the shape control on the form.

Are results in litres or gallons?

The tool reports volume in the units shown in the result rows. Convert with the Unit Converter if you need another unit.

Is a cylinder using inside diameter?

Use the inside diameter or radius of the container, not the outside wall measurement.

Can I size a raised bed instead?

For garden beds and soil bags, the Soil or Garden Bed calculators are a better fit.

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