What to count before you get quotes
Walk through the house and list every window you want to replace, with its rough size and type (double-hung, slider, casement, picture). The calculator’s ranges are for standard-size units, roughly the size of a typical bedroom double-hung window. Count a very large picture window or a patio door as two or three windows, and price bay and bow windows separately, since they cost several times more than a standard unit.
Also note which windows are on upper floors. Second-story installs need ladders or scaffolding, and installers often charge more for them.
Worked example: 10 vinyl insert windows
These are the calculator’s default inputs: 10 windows, vinyl frames, insert (pocket) installation, no quote entered, national average prices.
| Step | Calculation | Result |
|---|---|---|
| Per window | $200–$1,500 × 1.0 (insert) | $200 – $1,500 |
| Total | per window × 10 | $2,000 – $15,000 |
| Midpoint | ($2,000 + $15,000) ÷ 2 | $8,500 |
| Labor portion | $100–$300 × 10 | $1,000 – $3,000 |
Switching the same job to full-frame raises it to $2,600–$19,500. Fiberglass inserts come to $4,000–$20,000 and wood $8,000–$38,000.
The range is wide on purpose. A $200 vinyl window is a basic double-pane unit in a standard size; a $1,500 one might have triple glazing, a premium brand, custom sizing or a lifetime transferable warranty. Once you have a written quote, type the per-window price into “Your quote per window” and the estimate collapses to that figure, so you can compare it against the typical ranges in the table.
Insert or full-frame?
Insert (pocket) replacement leaves the existing frame, interior trim and exterior siding in place. The installer removes the old sashes and sets a new window inside the old frame. It’s faster and cheaper, but the glass area shrinks slightly and any rot in the old frame stays hidden.
Full-frame replacement strips the opening down to the rough framing. It costs more because of the extra demolition, flashing and new trim inside and out. The calculator uses a 1.3× multiplier for full-frame jobs. That figure is an editorial assumption rather than a published average, so treat it as a planning number. Full-frame makes sense when frames are rotten or out of square, when you want a different window size or style, or when you’re residing the house anyway.
What changes the price
- Frame material. Vinyl is the budget option; fiberglass is stiffer and more dimensionally stable; wood looks traditional but needs regular painting.
- Glass package. Low-e coatings, gas fills and triple panes all add cost, and may be required to meet energy codes in colder climates.
- Window style. Casements and awnings have more hardware than double-hungs or sliders. Fixed picture windows can be cheaper per square foot.
- Access and condition. Upper floors, lead paint in older homes (which requires certified lead-safe work practices), and rot repair all raise labor.
- Quantity. Installers spread setup and travel over the whole job, so the per-window price often drops on larger orders.
Why show the labor portion?
The labor figure, $100–$300 per window at national average, is already included in the installed price. It’s shown so you can sanity-check a quote: if a contractor’s per-window price is below typical labor alone, ask exactly what it covers. It’s also roughly what you’d pay an installer if you buy the windows yourself, though many installers won’t warranty work on windows they didn’t supply.
Related estimates
New windows are often paired with new siding, since full-frame replacement fits naturally into a residing job; see the siding cost calculator. If you’re replacing windows to cut energy bills, the electricity cost calculator and HVAC replacement cost calculator help put the savings in context.
How this calculator works
- Per-window range = installed range for the frame material × install-type multiplier × local cost factor.
- Total = per-window range × number of windows.
- Labor portion = installation-labor range × number of windows × local cost factor.
Assumptions and limitations
- Installed prices are national 2026 ranges per window for standard-size units and include the window and installation.
- Full-frame replacement is priced at 1.3× an insert replacement. This is an editorial assumption; actual premiums depend on trim, siding and any repairs.
- The labor portion uses a typical installation-only range per window and is shown for reference. It is already part of the installed price.
- If you enter a quote, it replaces the typical range and is not adjusted for region or install type.
- Excluded: custom shapes, bay/bow windows, egress cut-outs, rot repair, lead-paint precautions, interior finishing and disposal fees.
These results are planning estimates, not quotes. Local prices, site conditions and building codes vary, so get written estimates from licensed contractors before you commit to a budget.
Try your own numbers. Every price and assumption above is editable in the estimator.
Back to the window replacement estimatorFrequently asked questions
What is the difference between insert and full-frame replacement?
Is it cheaper to replace all windows at once?
Which frame material is best?
Sources and data
Prices are US national ranges reviewed October 2026 (data version 2026.10). A few values are editorial estimates where no single published source exists; the Cost Index marks each one. Read our methodology and editorial policy.