Soil volume calculator
How much soil to buy for a raised bed or a set of pots — in litres and bags, no overbuying.
Raised bed
Round pots
You need about—
—bags to buy
Fill pots to ~3 cm below the rim, not to the top. Soil settles after watering, so it's worth having a spare bag. A 50 L bag fills roughly a 100 × 40 × 15 cm bed layer.