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Window replacement cost calculator

By Oleksii Chelbaiev Rates checked 5 sources

HOW MUCH DOES WINDOW REPLACEMENT COST FOR MY HOUSE?

$450–$1,200 per window

Fixr puts most window replacements at $450 to $1,200 per window, with an average of about $800. A single-story home with 10 to 15 windows runs about $8,000 to $12,000, and a two-story home with 15 to 30 windows $12,000 to $24,000. Enter your windows below to turn that into a range for your home.

Rates from Fixr (U.S.) and Angi (Seattle). An estimate, not a quote.

Single-hung, double-hung, sliding, casement or picture windows. Fixr: a single-story home has about 10–15 windows, a two-story home 15–30.

Ask your installer whether any of your windows need safety glass.

Only for customers who heat mainly with PSE electricity or PSE natural gas. Up to 15 windows per home.

Windows: 15
Your estimate Fixr
$5,300–$12,000
At Angi's $750 Seattle example Angi
$11,300
Vinyl frames: $350–$800 per window (Fixr).

Rounded to the nearest $100. Doesn't include permits ($50–$300 where needed, Fixr), rotten framing found when old windows come out, or trim and siding repair.

How the calculator works

Illustration of a tablet showing a window cost calculator with number of windows, window type, frame material and glass fields, in front of a house; beside it, double-pane vs triple-pane glass, vinyl, wood and fiberglass frame samples, and insert vs full-frame installation.
Illustration, not to scale.
  1. Standard windows. The number of windows is multiplied by Fixr's low and high price per window for your frame material. If you pick triple-pane glass, Fixr's triple-pane range of $1,000–$4,000 per window is used instead, because it's the bigger cost driver.
  2. Bay and bow windows. These are priced separately: $900–$4,500 for a bay window and $1,500–$8,000 for a bow window (Fixr).
  3. Extras. Tempered or laminated glass adds $100–$800 per window (Fixr). Sales tax is added at Seattle's 10.55% rate if you tick the box, because Washington contractors collect sales tax on the whole contract, labor included (Department of Revenue).
  4. Rebate. If you pick a PSE rebate tier, it's subtracted after tax, for up to 15 windows (PSE form 6683).

Rates used

Frame or windowPer window (Fixr, U.S.)
Aluminum$200–$800
Vinyl$350–$800
Fiberglass$400–$1,500
Composite$300–$2,500
Wood$600–$2,000
Triple-pane glass$1,000–$4,000
Bay window$900–$4,500
Bow window$1,500–$8,000
 Fixr, updated January 21, 2026. Fixr doesn't say whether its frame prices include installation, and its text gives $400–$2,000 for wood, lower than its table. Fixr lists labor at $150–$300 for smaller windows and up to $800 for large bay or bow windows, about 30% of the total.

Seattle prices

Angi puts a typical Seattle window replacement project at $5,735 to $23,555, with an average of $14,453, or $350 to $2,750 per window (August 2026). Its Seattle page uses $750 per window as an example, which is the second figure the calculator shows. Angi says the median Seattle home has about 15 to 20 windows. For Seattle permits, PSE rebates and what to check before you sign, see our window replacement cost in Seattle guide.

Insert or full-frame?

The calculator doesn't change the price for installation method, because Fixr gives no figure for it. This Old House lists $100–$400 per window for an insert (the new window fits inside the old frame) and $180–$1,500 for full-frame replacement, which is needed when the frame is rotten or warped or you change the window's size. Fixr says hidden water damage can add "a few hundred dollars or thousands."

Frequently asked questions

How much does window replacement cost for my house?

Multiply your number of windows by the price per window for your frame material. Fixr puts most windows at $450 to $1,200 each, with an average of about $800: about $8,000 to $12,000 for a single-story home with 10 to 15 windows, and $12,000 to $24,000 for a two-story home with 15 to 30 windows.

How much does it cost to replace one window?

Fixr gives $450 to $1,200 for a typical window, with an average of about $800. Bay windows run $900 to $4,500 and bow windows $1,500 to $8,000. In Seattle, Angi lists $350 to $2,750 per window.

Is it cheaper to replace all windows at once?

Fixr says multi-window jobs may get a per-window discount, but it doesn't say how much. Ask installers to price the whole house and a smaller batch so you can compare.

How do I count my windows?

Count each window opening, not each pane. A pair of windows in one frame is usually quoted as one unit, but ask your installer how they count. Fixr says a single-story home typically has 10 to 15 windows and a two-story home 15 to 30.

Why doesn't the calculator ask for my address or phone number?

It doesn't need them. The math runs in your browser, and nothing you enter is sent anywhere or stored.

Sources

  1. Fixr — How Much Does Window Replacement Cost? (updated Jan 21, 2026)
  2. Angi — Window replacement cost in Seattle, WA (updated Aug 4, 2026)
  3. This Old House — Full-frame vs insert window replacement (updated Apr 23, 2026)
  4. Puget Sound Energy — Residential window rebate form 6683 (February 2026)
  5. Washington Department of Revenue — Custom construction; Seattle rate change, January 1, 2026

All sources accessed October 12–14, 2026.

This calculator gives a rough range from published average rates. It is not a quote and can't see your windows or frames. Rebate eligibility is decided by PSE, not by this page. Nothing you enter is sent anywhere or stored. Get written estimates from licensed, bonded and insured contractors before deciding. See our disclosure and disclaimer.