Grass Seed Calculator by Turf Type (Fescue, Bermuda, KBG)
Estimate exact pounds of grass seed for overseeding existing turf or planting a brand new lawn.
Interactive Material & Cost Estimator
HomeYardMath.com — Hardware Store Shopping List
Estimated Material Needed 1,000 sq ft (+10% buffer)
Net + Buffer Area 1,100 sq ft 1,000 base sq ft
Coverage Per Package 1000 sq ft per unit (3 lb bags)
Total Units / Packages to Buy 2 3 lb bags
Waste Buffer Included +10% included
Estimated Project Material Cost 2 3 lb bags
Retail Package Total $49.96 Before local sales tax
With Delivery / Bulk $49.96 Direct store pickup
Quick Reference Coverage Chart (Mulch & Soil)
Instant pre-calculated material estimates for common US residential project sizes before compaction buffer:
| Typical US Project | Area | Depth | Volume | Weight | Store Bags |
|---|---|---|---|---|---|
| Medium Overseed (5,000 sq ft Tall Fescue) | 5,000 sq ft | 3 lbs / 1k sq ft | 17 lbs | 17 lbs | 2 bags (10 lb) |
Engineering Formula & Material Density Constant
Seed Lbs = (Total Sq Ft × Seeding Rate per 1,000 sq ft) ÷ 1,000
Seeding rates vary significantly by grass type. New lawn seeding requires roughly double the seed rate of annual overseeding.
Best Timing for US Lawn Seeding
Cool-season grasses (Fescue, Bluegrass) should be seeded in early fall. Warm-season grasses (Bermuda, Zoysia) thrive when seeded in late spring.
Frequently Asked Questions
How much seed for 1,000 sq ft of tall fescue?
Typically 3 to 4 lbs for overseeding, or 6 to 8 lbs for a brand new lawn.
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