Window replacement cost calculator

Enter how many windows and the frame material, add a permit if the openings change, and enter your ZIP. The per-window price combines four guides; the material factor comes from This Old House's 2026 survey of window buyers.

$750Typical per window, installed

$7,183Average project (This Old House survey)

5 guidesFixr, HomeAdvisor, Bob Vila, TOH, Today's Homeowner

Window replacement cost

$2,800 to $8,800

Typical $6,000 (US average)

$750Per window, all in, typical

$2,800Low

$8,800High

Free. Your numbers become an estimate you can send from your phone.

How we got this

Standard replacement window, installed$350 to $1,100 a window (typical $750)Fixr $450 to $1,200 (average $800), HomeAdvisor $300 to $2,100 (average $850), Bob Vila $180 to $409 (average $280), Today's Homeowner $400 to $1,000. Middle of the lows, highs and averages.
Windows8 windowLow, typical and high each times 8.
RegionUS average prices (no ZIP entered)Enter a ZIP to scale the labor part of the price to your state's wages.
Total$2,800 to $8,800, typical $6,000

Item	Qty	Low	Typical	High
Replacement windows, installed	8 window	$2,800	$6,000	$8,800
Total		$2,800	$6,000	$8,800

Sources: Fixr, window replacement cost; HomeAdvisor, window replacement cost; Bob Vila, window replacement cost; This Old House, window replacement cost (2026 survey); Today's Homeowner, window replacement cost; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files); US Census Bureau, 2020 ZIP Code Tabulation Area to county relationship file. Checked 2026-10-09.

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Key takeaways

A standard replacement window usually costs $350 to $1,100 installed, about $750 typical.
This Old House's 2026 survey of 1,000 window buyers found $517 a window and $7,183 a project on average.
Frame material matters less than window type: in the survey, aluminum averaged $453 and fiberglass $564 a window.
Bays, bows and garden windows are priced separately and cost far more.

What one window costs

Guide	Per window	Average
Fixr	$450 to $1,200	$800
HomeAdvisor	$300 to $2,100	$850
Bob Vila (Angi data)	$180 to $409	$280
Today's Homeowner	$400 to $1,000	Not given
This Old House survey	Not given	$517

The calculator takes the middle of the four ranges: $350 to $1,100 a window, $750 typical. This Old House's survey average is shown for comparison but has no range, so it is not counted.

Frame material

The survey gives an average installed price for each frame, which the calculator uses as a factor against vinyl, the most common choice.

Frame	Survey average per window	Factor
Aluminum	$453	×0.96
Vinyl	$472	×1.00
Composite	$513	×1.09
Wood	$544	×1.15
Fiberglass	$564	×1.19

Window type and glass

Style moves the price more than frame. HomeAdvisor lists single-hung windows at $100 to $400, double-hung at $150 to $650, casements at $150 to $1,000 and bays at $910 to $7,100. In the survey, double-pane windows averaged $529 a window and triple-pane $609. For bays and bows, use the bay window cost guide.

A worked example

Eight vinyl windows at the US average: $2,800 to $8,800, about $6,000 typical, or $750 a window. Switch to fiberglass and add a permit and ten windows come to about $9,137 typical. Enter a ZIP to scale the 40% labor share to your state.

Fixr's own whole-house table puts 11 to 20 windows at $4,950 to $24,000, so a big job often lands below the per-window typical times the count.

Quoting window jobs

List each opening. Size, style and room on its own line lets the customer drop or add windows.
Insert or full-frame. Say which, and why.
Interior trim and paint. Say whether they are included.
Lead-safe work. Homes built before 1978 need lead-safe practices when old windows come out.

Save the result as an estimate in Koira and take the deposit when the order is placed.

Last checked October 9, 2026. More for your trade: how remodelers run on Koira.

FAQ

How much does it cost to replace one window?

About $350 to $1,100 installed, $750 typical, combining Fixr, HomeAdvisor, Bob Vila and Today's Homeowner.

How much does it cost to replace all the windows in a house?

This Old House's 2026 survey found $7,183 per project on average. Fixr puts 11 to 20 windows at $4,950 to $24,000.

Are vinyl windows cheaper than wood?

Yes. The survey found $472 a window for vinyl and $544 for wood on average.

Do I need a permit to replace windows?

Often not for same-size swaps. HomeAdvisor puts permits at $50 to $300 when you change the structure or install larger windows.

Does replacing windows save energy?

Newer double-pane Low-E windows lose less heat than old single-pane ones. Savings depend on the old windows and your climate.

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