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Gardening Calculators

Seeds Per Row Calculator

Verified formula Updated Jun 2026 Private — runs on your device

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cm
cm
Verified formula Private

Seeds per row

21

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Seeds Per Row Calculator

The Seeds Per Row Calculator works out your seeds per row in an instant. Enter row length and spacing between seeds and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the row length.
  2. Enter the spacing between seeds.
  3. Read off your seeds per row — the calculator updates automatically, with no button to press.

Worked example

For example, with row length of 300 cm and spacing between seeds of 15 cm, the seeds per row is 21.

Inputs used
Row length 300 cm
Spacing between seeds 15 cm
Results
Seeds per row 21

Results are estimates for educational use, not professional advice.

Frequently asked questions

Divide the row length by the spacing and add one for the first seed. A 300 cm row at 15 cm spacing holds 21 seeds.

A row needs a seed at the start as well as after each gap, so the count is the number of gaps plus one.

Yes. Sow a few extra to allow for seeds that fail to germinate, then thin to the right spacing.

Seed packets list the recommended spacing for each crop, which sets healthy growth and yield.

Enter the row length. Enter the spacing between seeds. Read off your seeds per row — the calculator updates automatically, with no button to press.

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