How it works
How to calculate it
The calculator applies the values you enter to this formula:
Seed pounds = lawn area ÷ 1,000 × application rate.
How to use this calculator
- Measure bare or overseeded lawn area.
- Use the product label's application rate.
- Enter the price per pound for the selected mixture.
Worked example
A 20 × 15 ft lawn seeded at 6 lb per 1,000 sq ft needs about 1.8 lb of seed.
Important assumptions
- Use the seed producer's rate for new lawns or overseeding.
- Irregular areas should be measured in sections.
- Germination depends on seed quality, weather, soil, and watering.
Common mistakes to avoid
- Using a new-lawn rate for overseeding.
- Applying one rate to every grass mixture.
- Buying seed before checking climate and site suitability.
Method reviewed June 10, 2026. Prices and rates are user-provided defaults and should be replaced with local values.