Window Replacement Cost Calculator
Add up a window-replacement job from your own quoted price per window and per-window install charge. This worksheet stores no price list — it works only from the numbers on your real estimate, so it stays honest whatever windows and labor cost this year.
Calculator
10 windows at your $550 unit plus $150 install each is about $7,000. Per-window price rises with size, style and glass — this worksheet stores no price list.
Replacement windows are almost always priced per opening: a unit price for the window plus a labor charge to pull the old sash and set and seal the new one. Multiply the two per-window figures together, times the number of windows, and you have a job total. This calculator does exactly that — and nothing more, because the only prices it ever sees are the ones you type in from a real written estimate.
Why no built-in price table? Because window prices swing enormously with size, frame material, glass package and your local labor market, and they change every year. A number that was “right” last season would mislead almost everyone today. By running the arithmetic on your quote, the total is correct for your house and your installer, and it never goes stale. Enter each line the way your contractor wrote it and compare bids on one clean total.
Formula
total = count × (price + install)
- count — the number of windows in the job.
- price — your quoted unit price for one window, in dollars.
- install — your quoted labor to fit one window, in dollars.
- total — the estimated job cost from your own numbers.
The per-window figure price + install is the fully installed cost of a single opening — a handy number to keep when a bidder lumps everything together.
Worked example
Say you are replacing 10 windows. Your quote lists each window at $550 and $150 of install labor per opening:
installed per window = $550 + $150 = $700
total = 10 × $700 = $7,000
That is $7,000 for the job, or $700 a window installed. Swap in a different unit price or a different opening count and the total moves with it — that is the whole point: the answer follows your quote, not a stored list.
Match the scope, not just the sticker
To compare estimates fairly, make sure each one covers the same scope. A low per-window price that excludes tear-out of the old frame, exterior trim, interior casing, flashing, insulation of the gap or haul-away is not really cheaper — it just moves those costs somewhere you have not looked yet. Ask each bidder to break the price into the window unit and the install labor, which is exactly the two lines this worksheet uses.
Per-window price is driven by things a calculator cannot know for you: the size of the opening, whether it is a double-hung, casement, slider, bay or picture window, the frame material, and the glass package. Larger and specialty units cost far more than a standard double-hung, so a house with a few big picture windows will not average out to the same per-window number as one with ten identical bedrooms. Price each distinctive opening on its own line if your quote allows it, then total them here. Everything this tool produces is a planning estimate — get the scope and the per-opening prices in writing before you commit.
Frequently asked questions
How much does it cost to replace 10 windows?
There is no single national number, and we deliberately do not store one. Take the per-window price and install charge from your own quote and multiply by the number of openings. For example, 10 windows at $550 each plus $150 install works out to $700 installed per window, or $7,000 for the job. Your real figure depends entirely on your local quotes, the window type and the opening sizes.
Why does this tool not include window prices?
Because window and labor prices vary hugely by size, frame material, glass and region, and they change every year. A stored price would be out of date and wrong for most people. Running the math on the price you were actually quoted gives a result that is right for your house and your installer, and it never needs updating.
What drives the price of a replacement window?
Mostly the opening size, the window style (double-hung, casement, slider, bay or fixed picture), the frame material and the glass package. Larger and specialty units cost far more than a standard double-hung, so price your distinctive openings on their own lines rather than assuming one average per window.
Should I price the window and the install separately?
Yes. Splitting the unit price from the install labor, as this worksheet does, lets you compare bids line by line and spot a low window price that hides a high labor charge, or install work that quietly leaves out trim, flashing or haul-away.
Is this an estimate or a bid?
It is a planning estimate built from your inputs, not a bid. Measure your openings, get written quotes and confirm exactly what the install includes before you commit.