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Home & Garden
Plant Spacing Calculator
Find how many plants fit a garden bed at a given spacing.
Plants needed
—
For this bed.
| Bed area | — |
|---|---|
| Spacing | — |
| Per row | — |
| Rows | — |
Show our math
Enter your figures above to see the step-by-step working.
Everything computed client-sideEverything computed client-side — nothing leaves this page
How the Plant Spacing Calculator Works
Spacing keeps plants from crowding as they mature. Convert the recommended spacing to feet (divide inches by 12), then count how many fit along the bed’s length and width. Multiply the two to get the total in a simple square grid. A 10-by-4-foot bed with 12-inch spacing holds 10 across and 4 down — 40 plants.
A square grid is the easy layout. A triangular (offset) layout fits about 15% more plants in the same area because each row nestles into the gaps of the one before it. Always follow the spacing on the seed packet or plant tag — it accounts for the mature size.
plants = floor(length ÷ spacing) × floor(width ÷ spacing)
Frequently Asked Questions
How do I calculate plants for a bed?
Convert the spacing to feet, then multiply how many fit along the length by how many fit along the width. This calculator does it for a square grid.
What is the difference between square and triangular spacing?
Square spacing lines plants up in a grid. Triangular (offset) spacing staggers each row and fits roughly 15% more plants in the same space.
Where do I find the right spacing?
The seed packet or plant tag lists it — it reflects the mature width, so plants have room to grow without competing.
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