Grass Seed Calculator
Calculate how much grass seed you need from lawn area and the seed product’s recommended application rate.
Results
Lawn area
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Seed required
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Use the result as a planning estimate and verify project-specific measurements, product information and site conditions where relevant.
How it works
The calculator multiplies the measured lawn area by the application rate and applies any extra percentage.
seed = area × application rate × (1 + extra %)Worked example
At 5 lb per 1,000 sq ft, a 1,500 sq ft lawn requires 7.5 lb of seed.
Assumptions
- The entered rate is a mass of seed per unit area.
Limitations
- Recommended rates vary by grass species, overseeding/new-lawn use and product; follow the seed label.