Window Cost Calculator: Estimate Your Project in 2026

Jump to the calculator. Use this free tool to build a quick, private ballpark for a home window replacement project in 2026. Tell it how many windows you're replacing, pick the window type (double-hung, single-hung, casement, bay/bow, basement, or picture), choose a frame material (vinyl, fiberglass, or wood), and select whether you're doing an insert/retrofit into the existing frame or a full-frame tear-out. The tool returns a low-to-high installed cost range using typical 2026 price bands for home windows — vinyl, wood, and fiberglass units in standard residential styles. Everything runs in your browser; nothing is sent anywhere and no personal information is collected. Treat the result as a planning estimate, not a quote. Window prices swing widely with region, home height, glass package, and frame condition, so when you're ready to buy, get at least three quotes from licensed local window installers and measure your openings first.