Seeding an acre (43,560 sq ft) as a new lawn takes about 348.5 lb of tall fescue or 108.9 lb of Kentucky bluegrass. Overseeding an existing lawn takes roughly half as much.
Change the numbers
The calculator below is pre-filled for this project. Adjust any value — including feet and inches — and the results update instantly.
Rates are typical mid-range values; your seed bag’s rate takes priority.
Your results
Grass seed needed348.5 lb
Buy at least349 lb
Rate used8 lb per 1,000 sq ft
Lawn area43,560 sq ft
Seed for an acre by grass type
Grass
New lawn
Overseeding
Tall fescue
348.5 lb
174.2 lb
Kentucky bluegrass
108.9 lb
54.5 lb
Perennial ryegrass
304.9 lb
152.5 lb
Fine fescue
196 lb
98 lb
Bermudagrass, hulled
65.3 lb
32.7 lb
Bahiagrass
326.7 lb
163.4 lb
Centipedegrass
21.8 lb
10.9 lb
Seed blends list a seeding rate on the bag; when they do, use it instead of the species rates above.
The math (tall fescue)
43,560 ÷ 1,000 × 8 lb = 348.5 lb
Common questions
How much grass seed for an acre?
About 348.5 lb of tall fescue or 108.9 lb of Kentucky bluegrass for a new lawn; about half for overseeding.
