Complete Guide: How Much Grass Seed Do You Need Per 1,000 Square Feet?
A grass seed calculator converts your lawn's size into the exact amount of seed you need, based on whether you're starting a new lawn from bare soil or overseeding an existing one. This free tool applies standard seeding rates per 1,000 square feet, adjusted for your specific grass type.
💡 Quick Summary
New lawns typically need about 16 lb of seed per 1,000 sq ft, while overseeding an established lawn needs far less, around 4 lb per 1,000 sq ft, since you're filling gaps rather than starting from scratch.
How Many Pounds of Grass Seed Per 1,000 Sq Ft by Grass Type?
| Grass Type | Relative Seeding Rate |
|---|---|
| Tall Fescue / Fine Fescue | Standard rate (larger seeds) |
| Perennial Ryegrass | ~75% of standard rate |
| Kentucky Bluegrass | ~50% of standard rate (small seeds) |
| Bermuda / Warm-Season Grass | ~40% of standard rate (very small seeds) |
Step-by-Step Instructions
- Enter your lawn's length and width in feet.
- Select whether you're seeding a new lawn or overseeding an existing one.
- Select your grass type to adjust the seeding rate.
- Click ⚡ Calculate Grass Seed Needed.
- Review your total pounds of seed and suggested bag count, then use 📋 Copy Summary to save your results.
Tip: Always check the seeding rate printed on your specific seed bag, since blended seed mixes can have different recommended rates than single-variety seed.