🌾 Grass Seed Calculator
Calculate how much grass seed you need for new lawns or overseeding based on grass type and lawn area
Privacy First: All calculations happen in your browser. No data is sent to any server.
Calculate Seed Needed
How to Use This Calculator
- Measure your lawn area in square feet (length × width)
- Select your grass type based on your climate and preferences
- Choose whether you're planting a new lawn or overseeding
- Click "Calculate" to see how many pounds of seed you need
- Purchase 10-15% extra seed for optimal results
Frequently Asked Questions
How much grass seed do I need per square foot?
For new lawns: Kentucky Bluegrass needs 2-3 lbs per 1000 sq ft, Tall Fescue 6-8 lbs, Perennial Ryegrass 5-7 lbs, and Bermudagrass 1-2 lbs. For overseeding, use half these rates.
What's the difference between new lawn and overseeding rates?
New lawn seeding requires more seed to establish full coverage from bare soil. Overseeding uses about 50% of the new lawn rate since you're filling in existing grass.
When is the best time to plant grass seed?
Cool-season grasses are best planted in early fall or spring (60-75°F). Warm-season grasses should be planted in late spring to early summer when soil temps reach 65-70°F.
Should I buy extra grass seed?
Yes, purchase 10-15% extra seed to account for uneven spreading, birds eating seed, and potential reseeding of bare spots.