Lawn seed quantity calculator
Plan grass seed quantity and whole bags from lawn area and the application rate on your seed label. Use the product’s rate for new seeding or overseeding as appropriate.
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How it works
Formula
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Sources
- University of Minnesota Extension — seeding and sodding lawnsSources reviewed: 2026-10-30
Assumptions and limitations
Use the product’s rate for new seeding or overseeding as appropriate. The allowance is extra seed, not an instruction to exceed the label rate. No germination or coverage guarantee.
How to use this tool
Set up the inputs
Measure the lawn area in square metres. Copy the label rate in grams per square metre, add a reserve if wanted, and enter bag mass in kilograms.
Worked examples
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Round a seed order up to full bags
100 m² × 30 g/m² × 1.10 = 3.3 kg; 4 × 1 kg − 3.3 kg = 0.7 kg.
Frequently asked questions
How should I read the result from Lawn seed quantity calculator?
Seed mass includes the allowance. Bag count rounds up; leftover seed compares complete bags with that adjusted requirement.
Processing and privacy
The calculation or transformation runs in your browser. The tool does not send its input values or generated output to an application server. Loading a page still makes infrastructure requests; optional analytics and Google consent messages have separate controls.
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Help and feedback
Consult the linked sources for definitions and reference data. Contact Support if you have a question or notice a problem.
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