Last updated: April 13, 2026

Vegetable Seed Calculator

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Table of contents

How many seeds do I need?

Calculating seed needs depends on row length, desired spacing, and germination rate. Since not every seed will germinate, always plant 15–25% more seeds than the number of plants you want. Check the seed packet for the germination rate percentage.

ft
inches
From seed packet (typically 75–95%).
%

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