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Grass Seed for 4,000 Square Feet

For 4,000 sq ft at a new lawn rate of 5 lb per 1,000 sq ft, you need about 20 lb of grass seed (1 bags). Switch between new-lawn and overseeding rates below.

Grass seed
20 lb
Lawn area
3,969 sq ft
Seed needed
19.8 lb5 lb per 1,000 sq ft
25-lb bags
1 bag
Cost (est.)
$119~$6/lb
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Want the full guide — tools, step-by-step, common mistakes and FAQ? See the Grass Seed Calculator.

Other sizes

500 sq ft (new lawn)500 sq ft (overseeding)1,000 sq ft (new lawn)1,000 sq ft (overseeding)1,500 sq ft (new lawn)1,500 sq ft (overseeding)2,000 sq ft (new lawn)2,000 sq ft (overseeding)2,500 sq ft (new lawn)2,500 sq ft (overseeding)