Round cylinder
Internal radius squared × π × fill height. A 20 cm diameter is a 10 cm radius.
A LITTLE SPACE. MEASURED WELL.
Put the guesswork down. Compare container sizes, leave a sensible fill gap of your choice and build a clear list for your next planting project.
02 / SEE THE SPACE
FILLED VOLUME / EACH
—litresCalculated from idealised geometry. Actual usable volume can differ because of curved walls, liners, drainage layers, roots and packing. No load-bearing, soil-purchase or plant-suitability recommendation is implied.
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THE NUMBERS BEHIND THE PLAN
Internal radius squared × π × fill height. A 20 cm diameter is a 10 cm radius.
Internal width × depth × fill height. Divide cubic centimetres by 1,000 for litres.
The radius at the fill line is interpolated between bottom and rim. The volume is a truncated cone, not an average-diameter cylinder.