Grass Seed Calculator

Estimate grass seed by lawn area and seeding rate.

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How it works

Seeding rates vary by grass type and whether you are starting a new lawn or overseeding an existing one.

Pounds = (Area ÷ 1000) × Seeding rate

New lawn vs. overseeding

A new lawn usually needs more seed than overseeding an established lawn. Check the bag for the recommended rate for your grass type.

Timing matters

Cool-season grasses grow best when seeded in early fall or spring. Warm-season grasses prefer late spring to early summer.

Frequently asked questions

How much grass seed per 1000 square feet?

A typical range is 4 to 7 pounds per 1000 square feet for a new lawn, and less for overseeding.

Should I overseed or start over?

If the lawn is thin but mostly healthy, overseeding is easier. Start over only if most of the grass is dead or weeds dominate.