Lawn & Yard
Grass Seed Calculator
Enter your lawn's dimensions and project type to find out how many pounds of seed and how many bags you'll need.
You'll need
24 lb of seed
New lawns need a heavier seeding rate than overseeding an existing lawn — the calculator adjusts automatically based on your selection.
How much grass seed do I need?
Seeding rate depends on whether you're starting a lawn from bare soil or overseeding an existing one. New lawns typically need around 16 pounds of seed per 1,000 square feet to establish a dense, even stand of grass.
Overseeding an established lawn requires far less — usually around 5 pounds per 1,000 square feet — since you're filling in gaps rather than starting from scratch.
Measure your lawn's length and width, or break irregular yards into simpler rectangular sections and add the areas together for a more accurate total.
Frequently asked questions
For a new lawn, plan on about 16 pounds of seed per 1,000 square feet. For overseeding an existing lawn, around 5 pounds per 1,000 square feet is typically enough.