Carpet for a 20 × 20 room
Short answer
A 20 × 20 ft room is 400 sq ft (44.4 sq yd) of carpet — about $2,787–$5,400 installed with padding and labor at standard grade. It's wider than a 12-ft roll, so plan on 1 seam and about 20% waste.
Carpet needed
44.4 sq yd
Installed cost
$2,787–$5,400
Floor area
400 sq ft
Seams
1
Carpeting a 20 × 20 room
A 20 × 20 ft room is 400 sq ft, or 44.4 square yards. Off a standard 12-ft carpet roll that takes about 40 running feet, pieced from 2 strips with 1 seam — roughly 20% waste. Installed with padding and labor at standard grade, plan on about $2,787–$5,400.
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Frequently asked questions
How much carpet do I need for a 20 × 20 room?
A 20 × 20 ft room is 400 sq ft (44.4 sq yd). Off a 12-ft roll that's about 40 running feet, with 1 seam and roughly 20% waste.
How much does it cost to carpet a 20 × 20 room?
About $2,787–$5,400 installed for a 20 × 20 room at standard grade — that's carpet ($1,867–$2,933), padding, and labor. Deluxe carpet or stairs cost more.
Will a 20 × 20 room need a carpet seam?
Yes. The room is wider than a standard 12-ft carpet roll, so it takes 2 strips with 1 seam. A 15-ft roll can remove the seam if your room is 15 ft or less on the short side.