Plant Spacing Calculator
Fill in the values and the answer updates as you type.
How the Plant Spacing Calculator works
Plants are laid out in a square grid. Plants per row = bed length ÷ spacing, rows = bed width ÷ spacing, both rounded down. Check the seed packet for the spacing each crop prefers. Example: with the default values, a 3 × 1.2 m bed at 30 cm spacing holds 40 plants (10 per row, 4 rows).
Inputs and results
The Plant Spacing Calculator takes 3 inputs and gives 4 results.
What you enter
- Bed length (m) — starts at 3.
- Bed width (m) — starts at 1.2.
- Spacing between plants (cm) — starts at 30.
What you get
- Plants in the bed
- Plants per row
- Number of rows
- Plants per m²
Example: Plant Spacing Calculator with the starting values
With bed length 3 m, bed width 1.2 m and spacing between plants 30 cm, the calculator returns:
| Plants in the bed | 40 |
|---|---|
| Plants per row | 10 |
| Number of rows | 4 |
| Plants per m² | 11.1 |
Change any value above and the results update straight away.
Plant Spacing Calculator FAQ
How do I use the Plant Spacing Calculator?
Enter bed length, bed width and spacing between plants in the fields, then read plants in the bed, plants per row, number of rows and plants per m² in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Plant Spacing Calculator calculate?
How many plants fit in a bed at a given spacing. It returns plants in the bed, plants per row, number of rows and plants per m² from the 3 values you provide.
What values does the Plant Spacing Calculator start with?
It opens with bed length 3 m, bed width 1.2 m and spacing between plants 30 cm so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Plant Spacing Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Plant Spacing Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.