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Window Replacement Cost Calculator (2026)

Estimate the cost to replace windows. Pick window count, material (vinyl, fiberglass, wood), install type, and trim. 2026 data; not a contractor bid.

By Martin Lashgari, Ph.D., P.E., PMP · Last reviewed July 2026

Black-framed double-hung replacement window installed in a vinyl-sided home with flashing tape visible at the jamb and the old sash set aside on a sawhorse

Enter your window project

Includes materials, labor and contractor markup; the breakdown below lists each line. Scaffolding or a lift for hard-to-reach windows is not included.

Common projects

Project size

Uses the first 3 digits as a planning zone (not exact local pricing). Overrides state average when matched.

Material & install

Use full-frame if old frames are rotted or you're changing opening size.

Demo, trim & permit

Your window replacement estimate

Estimated installed range
Calculating…
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Materials
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Labor
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Per window
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Cost breakdown

ItemQuantityEstimated range
Planning estimate, not a bid. 2026 rates on this page cite HomeGuide (9 rows), HomeAdvisor (6), Homewyse (4) and BLS wage data (1). 2 rate rows are internal estimates with no public source yet. Compare written bids on an identical scope for accurate local pricing.
What's not included: egress-window cutouts (new bedroom egress), historic-district approvals, lead-paint RRP-certified work on pre-1978 homes, structural header changes for opening enlargements, impact-rated glass surcharges in HVHZ counties, and scaffolding, a lift or other special access for windows out of ladder reach. Ordinary tools and ladders are part of the installation labor.

Bid check

Got a window contractor quote? Compare it to the planning range.

Not sure and Whole estimate compare with the whole estimate. Materials + equipment uses those lines alone, without labor lines or markup; items priced as installed work are left out and the result names them.
Quote per window
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Range check
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Scope risk
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Add a quote amount to compare it against the current estimate.

Methodology & sources

What this is: a planning-range window-replacement calculator. Its rates cite HomeGuide, HomeAdvisor, Homewyse and BLS wage data, and 2 rows are internal estimates. The note under the estimate counts the rows from each source.

Material pricing is per-window supply for standard double-hung-equivalent sizes (~12-16 sq ft). Larger or specialty (bay/bow) windows priced per-assembly.

Labor is priced from per-unit installed rates, not by the hour. For reference, the rate file also lists a loaded crew rate ($55-$95 per crew-hour) built on BLS OEWS 47-2121 (Glaziers) and 47-2031 (Carpenters). Throughput: ~5 windows/crew-day for inserts, 3/day for full-frame.

Energy code: Title 24 (CA), Stretch (MA), and Florida HVHZ all have window-specific code premiums — built into the location multipliers.

Last updated: November 2026. Full methodology →

Helpful materials & tools for this project

Replacing windows yourself? Beyond the units, you'll need the sealing and finishing supplies:

  • Replacement windows — Insert or full-frame units — the main cost.
  • Low-expansion window foam — Seals the gap without bowing the frame.
  • Flashing tape — Waterproofs the sill and jambs.
  • Exterior caulk & shims — Sets and seals the unit square and plumb.

Suggested materials to help you plan — not an endorsement, and never a contractor referral.

Cost simulator

Monte Carlo simulation

See the full range of likely costs — with the odds

For a typical 5 vinyl - kitchen reno, the installed planning band runs $6,191 to $10,787 nationally before regional adjustment. A known surprise risk is rotted frame found — insert becomes full-frame, typically adding $300–$1,500 when it occurs; our model assumes it on about 30% of these projects, a planning assumption rather than a measured rate.

Worked example: 5 vinyl - kitchen reno

To show exactly how the band is built, here's the calculator's own engine run on the 5 vinyl - kitchen reno scenario at national average pricing — the same line items the calculator produces for this project, laid out as a bill of quantities.

Line itemCategoryInstalled range
vinyl casement x 5Materials$2,353 – $4,000
Old window removal & haul-offLabor$235 – $400
Window install (insert / pocket)Labor$1,029 – $1,750
Job supplies (fasteners, shims, flashing, foam, caulk)Materials$80 – $110
Interior casing replacementMaterials$441 – $750
Exterior aluminum trim wrapMaterials$588 – $1,000
Permit (like-for-like)Permits$50 – $200
Mobilization / minimum chargeLabor$200 – $200
Contractor overhead & profitMarkup 26–30%$1,214 – $2,377
Installed total$6,191 – $10,787

National average, planning ranges not a bid. Change the size, material, or ZIP in the calculator above to reprice this exact breakdown for your project.

What this project costs in different metros

Regional labor and material markets move the installed price. These bands come from the same engine as the calculator above, run at each metro's planning multipliers — enter your ZIP in the calculator for a figure tuned to your area. National reference: $6,200–$10,800.

MetroTypical installed rangevs. national
San Francisco, CA$7,250–$12,700+18%
New York, NY$7,350–$12,800+19%
Boston, MA$6,800–$11,850+10%
Chicago, IL$6,900–$12,050+12%
Atlanta, GA$6,950–$12,150+12%
Houston, TX$6,500–$11,350+5%
Miami, FL$6,100–$10,650-1%
Phoenix, AZ$6,350–$11,050+3%

Planning ranges, not contractor quotes. Multipliers are rounded regional planning indices (see methodology), not a reproduction of any proprietary cost table.

Window replacement cost by number of windows

Vinyl casement windows replaced as inserts, with the old windows removed, new interior casing and exterior trim wrap, and a minor permit, at national average prices. These are fixed examples, not the settings in the calculator above; only the count changes from row to row. The trip, setup and permit are spread across the job, so the cost per window drops as the order grows.

Windows replacedInstalled rangeRelative
1 windowsingle replacement · $1,588–$2,483 per window $1,588 – $2,483
5 windowsone elevation · $1,238–$2,157 per window $6,191 – $10,787
10 windowstypical whole-home · $1,205–$2,104 per window $12,051 – $21,038
15 windowslarger home · $1,189–$2,077 per window $17,831 – $31,151
25 windowsfull replacement · $1,166–$2,039 per window $29,147 – $50,968

Planning ranges at national average pricing, not contractor quotes. Enter your ZIP in the calculator above for a figure tuned to your area — these rows use the same engine and the same assumptions.

How much does window replacement cost in 2026?

Ten windows of each type, replaced as inserts with the old units removed, no new interior or exterior trim and no permit. The per-window figure is the total divided by ten. A single window costs more per window, because the trip and minimum charges fall on one unit (see the table above).

Window typeInstalled rangeRelative
Vinyl - slider10 windows · insert · old units removed · $734–$1,317 per window $7,338 – $13,172
Vinyl - picture / fixed10 windows · insert · old units removed · $800–$1,381 per window $7,999 – $13,814
Vinyl - double-hung10 windows · insert · old units removed · $836–$1,446 per window $8,364 – $14,455
Vinyl - casement10 windows · insert · old units removed · $946–$1,638 per window $9,459 – $16,376
Aluminum-clad wood10 windows · insert · old units removed · $1,044–$1,893 per window $10,435 – $18,929
Fiberglass - double-hung10 windows · insert · old units removed · $1,230–$2,020 per window $12,300 – $20,202
Wood - double-hung10 windows · insert · old units removed · $1,236–$2,147 per window $12,363 – $21,473
Fiberglass - casement10 windows · insert · old units removed · $1,351–$2,401 per window $13,514 – $24,009
Wood - casement10 windows · insert · old units removed · $1,453–$2,527 per window $14,528 – $25,274

Planning ranges at national average pricing, not contractor quotes. Enter your ZIP in the calculator above for a figure tuned to your area — these rows use the same engine and the same assumptions.

Whole-house window replacement cost

Ten windows, a common whole-house count, by frame material and installation method. An insert sets the new window inside the old frame; a full-frame replacement removes the old frame and re-flashes the opening, which adds labor and usually a permit, so the full-frame rows include one. Interior casing and exterior trim wrap are extra in both; add them in the calculator above.

Material and methodInstalled rangeRelative
Vinyl double-hung, insert10 windows · no permit · $836–$1,446 per window $8,364 – $14,455
Vinyl double-hung, full-frame10 windows · with permit · $1,070–$1,879 per window $10,700 – $18,791
Fiberglass double-hung, insert10 windows · no permit · $1,230–$2,020 per window $12,300 – $20,202
Fiberglass double-hung, full-frame10 windows · with permit · $1,462–$2,451 per window $14,617 – $24,509
Wood double-hung, full-frame10 windows · with permit · $1,468–$2,577 per window $14,678 – $25,774

Planning ranges at national average pricing, not contractor quotes. Enter your ZIP in the calculator above for a figure tuned to your area — these rows use the same engine and the same assumptions.

What moves this price the most

Vary one input across its full range while holding everything else at the typical scenario, and this is how far each choice can move the installed estimate — measured by running the calculator's own engine. The widest bars are where your decisions matter most; the figures show the cheapest-to-priciest span each input creates on its own.

  • Number of windows$2,050–$62,600
  • Window type$7,150–$31,800
  • Install method$8,500–$10,200
  • Exterior wrap (aluminum capping)$7,500–$8,500
  • Replace interior trim$7,750–$8,500
  • Old window removal$8,100–$8,500

A tornado view: each row varies a single input; a real project moves several at once, so totals aren't additive.

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See all calculators →

Guides for this project

Window replacement costPrice by number of windows What drives project costsSize tops material in 42 of the 55 project types we model Why small jobs cost more per sq ftQuarter the size, same spec: a median 1.76x per unit in 12 trades Why contractor quotes differWhat moves a quote in our engines, and what they cannot see What a contractor quote should include10-point checklist to read a bid before you sign 2026 Home Improvement Cost IndexMedian project costs across all 55 trades

All cost guides →

Insert or full-frame?

Insert (pocket) replacement sets the new window inside the existing frame. It is faster, cheaper, and doesn't disturb interior trim or exterior cladding — the right call when frames are square, dry, and sound. The trade-off is slightly less glass area, since the new unit nests inside the old frame.

Full-frame replacement strips the opening to the rough framing and rebuilds with new flashing, insulation, and trim. It adds $180–$300 per window before markup, plus usually a permit, but is the only correct fix for rotted frames, chronic leaks, out-of-square openings, or when you're changing window size or style. It is also the standard for egress upgrades, where bedroom code requires a minimum clear opening.

A practical rule: probe the sill and lower frame corners with a screwdriver. Soft wood anywhere means full-frame — an insert over rot just hides a problem that keeps growing.

Glass packages: where the quote quietly grows

The frame material gets the attention, but the glass package moves the price just as much. Double-pane with Low-E coating and argon fill is the 2026 default and what the table ranges assume. Upgrades stack from there: triple-pane for cold climates and street noise, laminated glass for security and sound, tempered glass where code requires it (near doors, floors, tubs), and obscure glass for baths.

When comparing bids, line the glass specs up side by side — U-factor (insulation, lower is better) and SHGC (solar gain, climate-dependent) — rather than brand names. Two "vinyl double-hung" quotes $200 apart per window are often quoting different glass, not different quality.

Frequently asked questions

How much does window replacement cost in 2026?

Ten windows replaced as inserts, with the old units removed and no new trim or permit, run about $840-$1,450 per window for vinyl double-hung, $1,230-$2,020 for fiberglass double-hung and $1,240-$2,150 for wood double-hung. That is about $8,400-$14,500 for ten vinyl double-hung windows; ten fiberglass full-frame replacements with a permit run about $14,600-$24,500. A single window costs more per window, because the trip and minimum charges fall on one unit.

Insert vs full-frame replacement?

Insert (pocket) replacement keeps the existing frame; its installation labor is priced at $210-$350 per window before markup. Full-frame removes the frame down to the rough opening and adds $180-$300 per window, plus usually a permit, but is the right call if frames are rotted or the size is changing.

Do I need a permit to replace windows?

Like-for-like insert replacement is permit-exempt in many jurisdictions. Full-frame replacement, opening-size changes, and new egress (bedroom) windows usually require a permit. This calculator allows $50-$200 for a minor permit and $150-$500 for a major one.

Are vinyl windows cheaper than wood?

Vinyl is roughly 40-60% cheaper supply-side, but the gap closes installed because labor is similar. Vinyl typically lasts 20-30 years; clad-wood and fiberglass 30-50+.

What's the cheapest way to replace windows?

Insert vinyl in a like-for-like opening with no trim work and no permit. Buying in bulk through a distributor or warehouse store helps too — manufacturer offers can shave 10-20%.

Why does the calculator show a price range?

Brand, glass package (Low-E, argon, triple-pane), opening condition, and installer skill all move the total. The calculator adds up the low and high ends separately, from each line item’s low and high rate, so the range carries that spread instead of a single guess.

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

A 10-window house runs about $8,400-$14,500 with vinyl double-hung inserts, $10,700-$18,800 vinyl full-frame with a permit, and $12,300-$20,200 with fiberglass inserts, before any new interior or exterior trim. Twenty vinyl inserts run about $16,400-$28,500, a little under twice the ten-window price, because the trip and setup charges are shared across more windows.

When should windows be replaced?

Clear signals: fog or condensation between panes (failed seal), soft or rotted frame wood, sashes that will not stay open, persistent drafts, and single-pane glass in a cold climate. Most vinyl windows are due around 20-30 years; failed seals can be a one-window fix if frames are sound.

Is it cheaper to replace all windows at once?

Per window, yes - contractors share mobilization, scaffolding, and disposal across the job, and manufacturers discount volume orders, typically saving 10-20% versus replacing a few at a time. Phasing by elevation (worst side first) is the usual compromise when the whole house is not in the budget.

Common mistakes & questions

  • Insert vs full-frame — inserts keep old frame (cheaper); full-frame replaces frame and re-flashes (right call if frame is rotted).
  • Skip rot inspection — sashes rot first; jambs second; full-frame mandatory if jambs are soft.
  • Miss egress rules — a bedroom window needs a 5.7 sq ft clear opening (5.0 at a grade floor). A smaller replacement is allowed only when it is the manufacturer’s largest standard size that fits the existing frame or opening (IRC R310.2.5).
  • Wrong glass package — Low-E, argon, triple-pane vary by climate zone; match to IECC zone.
  • Ask your installer: insert vs full-frame, flashing detail, foam type (low-expansion only), interior trim plan, NFRC ratings.

When this estimate is wrong

  • Insert versus full-frame is the biggest install-method decision — a pocket insert reuses the existing frame and costs less, while a full-frame replacement removes the frame and re-flashes the opening and is the right call once the frame is compromised. On the total, though, how many windows you replace matters most, followed by the window type; install method is the smallest of the three.
  • Rot at the opening is found on removal — soft sills, jambs, or sheathing behind the trim, plus missing or failed flashing, add carpentry that no one can price until the old window is out.
  • Interior and exterior trim is separate work — re-wrapping exterior trim in aluminum and rebuilding or repainting interior casing and stools is priced apart from the window unit.
  • Egress rules can force a size change — bedrooms and finished basements require a minimum clear opening, so a replacement that would shrink the opening may need a larger unit or added work.
  • Pre-1978 homes trigger lead-safe work — disturbing old painted trim means RRP-certified containment and cleanup, adding labor a standard swap does not include.
  • Custom sizes, shapes, and grids cost more — arched, oversized, bay, or divided-lite windows carry a higher unit price and longer lead time than stock rectangles.
  • The glass package depends on climate — the right Low-E coating, gas fill, and pane count for your region change the unit cost, and matching it to code is not a flat add.