Pot Volume

Explanation

Choosing the right amount of potting soil for planters and pots is often a guess. This calculator gives you the exact volume in Liters or Gallons. ### Common Shapes - **Round (Cylinder)**: Classic flower pot. - **Rectangular**: Window box. - **Square**: Shrub planter. - **Tapered**: Most pots are wider at the top. We use the average diameter for accuracy. ### Drainage Remember that the bottom of the pot should have drainage material (gravel/clay pebbles), taking up 10-20% of the volume. The soil needed is slightly less than the total volume.

Examples

• Window box 20in x 8in x 8in = ~5.5 Gallons (20 Liters).
• Large round pot 16in diameter, 16in high ≈ 13 Gallons (50 Liters).

FAQ