MyGreenTools

MEASURE · PLAN · MAKE IT COUNT

Seeds for sowing calculator

Estimate seeds from target plants and your success rates.

Your project inputs

Enter your values and calculate.

Metric units as labelled. Prices, where used, are in EUR.

Method and limits

Target plants ÷ (germination percentage × establishment percentage), with percentages expressed as fractions. Round up to whole seeds. These assumptions do not guarantee a plant count.

Worked example

With the editable starting values: 20 seeds. Target: 14 target plants · germination 80 % · establishment 90 %. Estimate, not a guarantee.

Read the guide ↗

Frequently asked questions

Are these starting values recommendations?

No. They are editable examples. Use your own measurements and the product label or quoted specification.

What should I check before using the result?

Target plants ÷ (germination percentage × establishment percentage), with percentages expressed as fractions. Round up to whole seeds. These assumptions do not guarantee a plant count.

Are units and prices converted automatically?

No. These tools use the metric units shown next to each field. Monetary inputs and results are in EUR; enter the relevant EUR tariff or quote. No currency conversion or live prices are applied.

PLANNING SOMETHING BIGGER?

Set up a raised bed

Connect the related calculations in one materials summary.

Open complete project ↗

The project opens with editable examples. Inputs from this page are not transferred.