Plant Spacing Calculator
Enter the bed size and the spacing between plants.
This result is an estimate only. Double-check important figures before relying on them.
How it is calculated
- Square grid: (length ÷ spacing + 1) × (width ÷ spacing + 1), each rounded down
- Staggered: rows are spaced 0.866 × spacing apart, and alternate rows are offset by half a spacing
For the soil to fill the bed, use the soil volume calculator.
Worked example
A 2 × 1 m bed with 25 cm spacing in a square grid:
- 9 plants along the length × 5 across = 45 plants
Why your number may differ
Plants planted at the very edge may need a margin from the border. Adjust the bed size to leave a gap if you do not want plants on the edge.
Frequently asked questions
How do I work out plant spacing?
Divide each side of the bed by the spacing and add one for the plant at the edge, then multiply for a square grid.
What is a staggered layout?
Rows are offset by half a spacing so each plant is the same distance from its neighbours. It fits about 15% more plants than a square grid.
Where do I find the right spacing?
On the seed packet or plant label. Crowded plants compete for light, water and nutrients.