Plant Spacing Calculator
Works out how many plants a bed takes at the spacing you choose.
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
The formula
square: plants = ⌊length ÷ spacing⌋ × ⌊width ÷ spacing⌋ triangular: row gap = spacing × √3 ÷ 2, with every other row offset
Plants sit half a spacing in from each edge. An offset pattern keeps every plant the same distance from its neighbours and often fits more into a bed.
What to watch out for
Measure the planted part of the bed. Packet spacing assumes the plant gets that room on all sides, so a path or a neighbouring crop close by is worth allowing for.
Frequently Asked Questions
Is offset planting better than a square grid?
It fits more plants in a large bed at the same spacing, because the rows sit closer together. In a narrow bed the shorter offset rows can cancel the gain.
How many plants fit in a 3 × 1.2 m bed at 30 cm?
40 in a square grid.