How Much Does It Cost to Carpet a 20x20 Room?
Updated July 2026 · Pricing data from Floormath's flooring cost model
A 20×20 room measures 400 square feet. Using Floormath's current pricing model — 7 real carpet product tiers plus professional labor — installing carpet in a room this size runs $1,148 to $9,610, and most homeowners land near $2,696.
Cost by carpet product tier for a 20x20 room
| Product tier | Material | Installed range | Typical total |
|---|---|---|---|
| Polyester Cut-Pile Carpet | $1.69/sf | $1,148–$2,240 | $1,584 |
| Berber Loop-Pile Carpet | $3.29/sf | $1,634–$3,450 | $2,388 |
| Frieze / Twist Carpet | $3.79/sf | $1,854–$3,670 | $2,608 |
| Nylon Cut-Pile Carpet | $3.99/sf | $1,942–$3,890 | $2,696 |
| Triexta Pet-Friendly Carpet | $4.49/sf | $2,162–$4,110 | $2,916 |
| Pet-Proof Performance Carpet | $6.49/sf | $2,912–$5,320 | $3,896 |
| Wool Carpet — Luxury | $9.99/sf | $3,662–$9,610 | $5,536 |
Totals include 10% material waste and professional installation. Carpet rows include a standard rebond pad at $0.60/sf.
What moves the number in a 20x20 room
The spread comes almost entirely from product tier: Polyester Cut-Pile Carpet and Wool Carpet — Luxury are several dollars per square foot apart, which compounds to a four-figure gap in a 400 sq ft room. Labor is steadier — about $700 here at national rates, drifting 15–25% with your state. Every figure already carries the industry-standard 10% material waste allowance.
See your exact 20x20 room cost with your state's labor rates
Run the free calculator →Frequently asked questions
Does the price include installation?
Yes — every figure on this page includes materials with 10% waste plus professional installation labor at national-average rates. Old floor removal, subfloor repair, and stairs are extra.
How much does old floor removal add for this room?
Demolition and haul-away typically run $0.60–$1.50/sf — about $240–$600 for a 20x20 room, depending on what's coming out and local disposal fees.
How many square feet is a 20x20 room?
A 20x20 room is 400 square feet (20 × 20 = 400). Flooring installers order about 10% extra for cuts and waste, so plan on purchasing roughly 440 sq ft of material.