Calculate exactly how much grass seed you need for your lawn project. Get accurate seeding rates, bag counts, and cost estimates for 8 popular grass types - new lawns and overseeding.
Enter lawn details and click Calculate to see results
A lush, healthy lawn starts with proper seeding. Whether you’re establishing a new lawn or overseeding an existing one, using the correct amount of grass seed is crucial for success. Our Grass Seed Calculator helps you determine precise seeding rates for eight popular grass types, ensuring optimal coverage and germination while preventing waste and saving money.
Grass seed calculations are based on seeding rates per 1,000 square feet, which vary by grass type and whether you’re seeding a new lawn or overseeding. The formula is:
Area (square feet) = Length × Width (or π × radius²)
Pounds Needed = (Area ÷ 1000) × Seeding Rate
Bags Needed = Pounds Needed ÷ Bag Weight
Select grass seed based on your climate, sun exposure, and intended use:
“Finally got my lawn calculations right! I’ve overseeded twice before and always bought too much or too little seed. This calculator told me exactly what I needed for my 3,500 sq ft yard. Lawn looks fantastic now! Saved money and got perfect coverage.”
“I use this calculator for every lawn installation quote. The different grass types and seeding rates are spot-on with industry standards. Clients appreciate the detailed breakdowns. The cost estimator helps me stay competitive while maintaining quality. Essential tool!”
“Game-changer for our business! We do 50+ seeding jobs per season. This calculator ensures accurate seed ordering every time. The new lawn vs. overseeding feature is perfect. Export function keeps our records organized. Highly recommend to any lawn professional!”
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