Window replacement is a job most homeowners do once every couple of decades, with pricing that can vary widely between contractors and no easy way to sanity-check a bid. WindowPriceCalc exists to answer one question first: roughly what should this cost, given my house?
Cost is built from five inputs — material, window type, size, region, and count — split into a per-window materials cost and a per-window labor cost (installation, removal, and disposal of the old window), plus an optional one-time permit range for full-frame jobs. Base material and labor ranges are cross-referenced from published 2026 national cost data (Angi, HomeAdvisor, Pella, This Old House, homewyse) for per-window pricing by material and by window style. Size and region adjustments are directional multipliers based on typical market variance, not per-ZIP pricing data. The same numbers power both the calculator and the worked-example tables across the site, so they never disagree with each other.
It's not a quote. No calculator has seen your home's actual opening condition, your local labor market, or the glass package (Low-E coatings, gas fill, impact rating) you'd choose — all of which move the real number. Use this to walk into a contractor conversation with a realistic range in hand, not to skip getting an actual bid.
We're building a network of local window installers — homeowners who request quotes get connected to pros in their area when one is available, and that referral relationship is how this stays free to use. It never changes the numbers the calculator shows you.