Germination Rate Calculator
Enter seeds planted and seeds sprouted to get germination rate, then estimate how many seedlings a full packet will produce.
Germination Test Results
Total seeds placed in your test (10 or 20 is standard).
Number that showed a visible sprout.
Packet Yield Estimator (optional)
Leave blank to skip yield estimation.
Enter your test counts and click Calculate.
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Germination Rate
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0%
50%
100%
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Planted
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Sprouted
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Failed
Packet Yield Estimate
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Expected seedlings
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Seeds to sow for 50 plants
Typical Germination Rates — Common Vegetables & Herbs
Fresh seed under optimal temperature. Rates drop with age and poor storage.
| Crop | Typical Rate | Days to Sprout | Viability (yrs) |
|---|
Summary
Enter seeds planted and seeds sprouted to get germination rate, then estimate how many seedlings a full packet will produce.
How it works
- Enter the number of seeds you planted in your germination test.
- Enter how many of those seeds actually sprouted.
- The calculator shows germination rate as a percentage and a quality rating.
- Optionally enter a packet seed count to estimate expected seedling yield.
- Review the reference table to compare your rate against typical values for your crop.
Use cases
- Test old seed packets before dedicating bed space to them.
- Decide how densely to sow when germination rate is low.
- Calculate how many packets to buy to hit a target seedling count.
- Compare germination rates across seed brands or storage conditions.
- Benchmark fresh seed purchases against published germination standards.
- Track year-over-year viability of saved seeds.
Frequently Asked Questions
Last updated: 2026-07-01 ·
Reviewed by Nham Vu