Window Replacement Cost Calculator — By Material

Estimate window replacement cost by material (vinyl, wood, fiberglass) and insert vs. full-frame installation, with a low-high price range for your project.

July 9, 2026

Window Material

Number of Windows

Replacement Type

Estimated Total Project Cost

$1,000 – $9,000

Typical midpoint: ≈$5,000

Per window: $100 – $900

10 windows × vinyl insert rate

Insert replacement only works if your existing frame is square, dry, and free of rot. If a contractor finds water damage or a warped frame once they open the wall, they'll usually recommend switching to full-frame — worth budgeting toward the higher end of this range as a contingency.

Estimated Cost = Number of Windows × Per-Window Rate (by material) × Replacement-Type Multiplier. Insert replacement uses the material's base per-window range; full-frame applies a 1.3×–1.5× multiplier to account for the extra labor of removing the old frame and rebuilding the exterior trim/siding tie-in. These are national averages — actual quotes vary by region, window size, glass package (double vs. triple pane, Low-E coatings), and contractor, so treat this as a planning estimate rather than a bid.

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Reference Values

Last verified: Jul 9, 2026

Category	Range	What It Means	Status
Vinyl — full price range	$100–$900 per window	Widest material range because it spans builder-grade to premium/impact-rated vinyl. The most popular window material for replacements due to low cost and no maintenance.	Okay
Vinyl — typical standard insert (single story) ★	$300–$700 per window	Where most standard double-hung vinyl insert replacements actually land on a single-story home — the narrower, more realistic band.	★ Best
Wood	$150–$1,300 per window	Traditional look, needs periodic painting/sealing to prevent rot; often required or preferred in historic-district renovations.	Good
Fiberglass	$320–$1,500 per window	Highest upfront cost but the longest lifespan of the three — up to about 40 years versus roughly 20–30 for vinyl and wood, so the higher price can pay off over time.	Good
Full-frame replacement upcharge	≈1.3×–1.5× insert cost	Full-frame removes the old frame down to the studs and rebuilds exterior trim/siding tie-in — more labor and material than an insert, which reuses the existing frame.	Okay
National average, all materials blended	$750–$1,047 per window	Combined average reported across window replacement cost datasets when material type isn't isolated.	Good

Source: HomeAdvisor "Window Replacement Cost" 2026 guide, Angi "Window Replacement Cost" 2026 guide, and Pella "Replacement Window Cost by Material" — national installed-cost averages. Actual quotes vary by region, window size, glass package, and contractor.

Worked Examples

10 Vinyl Windows, Insert Replacement

Material: Vinyl
Windows: 10
Replacement Type: Insert

$1,000 – $9,000

10 × $100–$900/window (vinyl's full price range, insert baseline, no full-frame multiplier) = $1,000 low, $9,000 high.

10 Vinyl Windows, Full-Frame Replacement

Material: Vinyl
Windows: 10
Replacement Type: Full-Frame

$1,300 – $13,500

10 × ($100×1.3)–($900×1.5) = 10 × $130–$1,350 = $1,300 low, $13,500 high. Full-frame applies a 1.3× multiplier to the low end and 1.5× to the high end for the extra frame-removal and exterior tie-in labor.

8 Wood Windows, Insert Replacement

Material: Wood
Windows: 8
Replacement Type: Insert

$1,200 – $10,400

8 × $150–$1,300/window (wood insert baseline) = $1,200 low, $10,400 high.

Whole-House Project: 15 Fiberglass Windows, Full-Frame

Material: Fiberglass
Windows: 15
Replacement Type: Full-Frame

$6,240 – $33,750

15 × ($320×1.3)–($1,500×1.5) = 15 × $416–$2,250 = $6,240 low, $33,750 high. Fiberglass costs more upfront but typically lasts up to ~40 years, roughly 10–20 years longer than vinyl or wood.

Small Job: 6 Fiberglass Windows, Insert Replacement

Material: Fiberglass
Windows: 6
Replacement Type: Insert

$1,920 – $9,000

6 × $320–$1,500/window (fiberglass insert baseline) = $1,920 low, $9,000 high.

How to Use This Calculator

1

Choose your window material

Vinyl, wood, or fiberglass — each has a different per-window cost range and a different long-term lifespan.
2

Enter the number of windows

Count every window you plan to replace in this project, not just one room.
3

Pick insert or full-frame replacement

Insert reuses your existing frame and costs less. Full-frame rebuilds the frame and exterior tie-in and costs more, but is required if the existing frame is damaged.
4

Read your estimated cost range

The result shows a low-high total for the whole project plus a per-window breakdown — updates instantly as you change any input.

What Each Value Means

Per-Window Cost Range ($ per window): The installed low-high cost for a single window of your chosen material, before multiplying by how many windows you're replacing. Vinyl runs $100-$900, wood $150-$1,300, and fiberglass $320-$1,500.
Insert vs. Full-Frame Replacement (replacement type): Insert replacement reuses the existing window frame and is cheaper. Full-frame replacement removes the old frame down to the studs and rebuilds the exterior trim/siding tie-in, typically costing 1.3x-1.5x more than an insert job.
Total Project Cost ($ total): Per-window cost multiplied by the number of windows in your project, shown as a low-high range with a typical midpoint.

Frequently Asked Questions

How much does it cost to replace a window?

It depends heavily on material. Vinyl windows — the most popular choice — typically run $100 to $900 per window installed, with most standard double-hung insert replacements on a single-story home landing in a narrower $300-$700 band. Wood runs about $150 to $1,300 per window, and fiberglass runs about $320 to $1,500. Multiply your material's per-window range by how many windows you're replacing to get a whole-project estimate, or use the calculator above to do it instantly.

What's the difference between insert and full-frame window replacement?

Insert replacement (also called a "pocket" replacement) reuses your existing window frame — the installer removes just the old sash and inserts a new window into the existing opening, which is faster and cheaper. Full-frame replacement removes everything down to the studs, including the old frame, and rebuilds the exterior trim and siding tie-in. Full-frame costs more — typically 1.3x to 1.5x an insert job — but it's the only option when the existing frame is rotted, warped, or out of square, and it lets you resize the window opening.

Is it worth paying more for fiberglass windows?

Fiberglass has the highest upfront cost of the three materials, but it also has the longest lifespan — up to about 40 years versus roughly 20-30 years for vinyl or wood. Fiberglass also expands and contracts with temperature changes at nearly the same rate as glass, which means tighter long-term seals and fewer air leaks. If you're planning to stay in the home long enough to see the difference, the higher sticker price can pencil out cheaper per year than repeatedly replacing lower-cost vinyl windows.

Why is my contractor's quote different from this calculator's estimate?

This calculator gives a national-average planning range, not a site-specific bid. Your actual quote shifts based on window size (a large picture window costs more than a small bathroom window), glass package (double-pane vs. triple-pane, Low-E coatings, argon fill), your region's labor rates, how many stories the installer has to work at, and whether the crew finds hidden rot or framing damage once they open the wall. Always get 2-3 local quotes before finalizing a budget.

How many windows does a typical house have, and what does a whole-house replacement cost?

Most single-family homes have somewhere between 10 and 20 windows, though it varies widely by home size and layout. A whole-house insert replacement with mid-range vinyl windows commonly lands in the $3,000-$14,000 range for 10-20 windows; switching to full-frame or upgrading to wood or fiberglass can push a whole-house project well past $20,000. Enter your own window count and material above to get a project-specific range.