Grass Seed Calculator
Pounds of seed for a new lawn or overseeding — plus cost.
Tells you how many pounds of grass seed to buy based on your lawn size and seeding rate, whether you are starting a new lawn or overseeding an existing one.
🛒 Shop grass seed & spreaders → (affiliate links wire in once the account is live)
Seeding rates
New lawns need roughly 5 lb of seed per 1,000 sq ft; overseeding an existing lawn needs about 3 lb. Rates vary by grass type — check the bag.
FAQ
New lawn vs overseeding rate?
Use about 5 lb/1,000 sq ft for a brand-new lawn and ~3 lb/1,000 sq ft to overseed thin spots in an existing lawn.