Free Lawn Seed Coverage Calculator
Calculate the amount of grass seed needed for a new lawn or overseeding based on area and application rate.
sq ft
Seed Needed
20.0 lbs
5-lb Bags4
25-lb Bags1
Seed Needed vs Lawn Area
Lawn Seed Calculation
Seed (lbs) = Area (sq ft) / 1000 x Rate (lb/1000 sq ft)
New lawns typically need 3 to 5 lbs per 1,000 sq ft. Overseeding existing lawns uses about half that rate. Choose a seed blend suited to your climate and sun exposure.
Example Calculation
5,000 sq ft new lawn at 4 lb per 1,000 sq ft.
- 01Seed = 5000 / 1000 x 4 = 20 lbs
- 025-lb bags = ceil(20/5) = 4 bags
- 0325-lb bags = ceil(20/25) = 1 bag
Frequently Asked Questions
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