Window Replacement Cost Calculator

Last Updated: Jul 27, 2025

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Replacing damaged or old windows is a crucial home-improvement expense, and accurately estimating window replacement costs is a great way to avoid overspending or unexpected fees. That’s why we built the dedicated Window Replacement Cost Calculator, which homeowners can use to quickly determine the costs required for potential window replacements.

In this guide, we will walk through each topic:

  • What Is the Window Replacement Cost Calculator?
  • How to Use the Window Replacement Cost Calculator
  • How the Window Replacement Cost is Calculated — Example
A worker is replacing window of a home

What Is the Window Replacement Cost Calculator?

Window Replacement Cost Calculator is a simple yet powerful tool that makes the calculation easy, you don't need pen and paper. The calculator uses four key inputs to produce accurate estimates:

  • Number of Windows — How many windows you plan to replace.
  • Cost per Window — Average material cost per window.
  • Labor Cost per Window — Installation cost per window.
  • Additional Cost — Any other fees, such as disposal or permit costs.

Let’s discuss, step by step, how you can use our calculator.

How to Use the Window Replacement Cost Calculator

Using the calculator is straightforward. Simply enter your values into the input fields, and it displays the results instantly:

  • Number of Windows — 3
  • Cost per Window — $350
  • Labor Cost per Window$80
  • Additional Cost$150

Once you enter all inputs, the calculator instantly shows result:

  • Total Cost: $1,440
  • Cost per Window (incl. labor): $430

Based on these values, the calculator estimates your total window replacement cost at $1,440.

How the Window Replacement Cost Is Calculated — Example

The logic behind the calculator relies on simple arithmetic. We will walk you through a real‑world example to show how the calculation works:

Imagine you plan to replace 5 windows in your home and have gathered these cost estimates:

  • Material cost per window: $300
  • Labor cost per window: $75
  • Permit & disposal fees (additional cost): $150
  • Number of Windows: 5

Calculation steps:

  1. Total cost per window:
    $300 (material) + $75 (labor) = $375
  2. Total cost for 5 windows:
    5 × $375 = $1,875
  3. Grand total:
    $1,875 + $150 = $2,025

Result:

  • Total Cost: $2,025
  • Cost per Window: $375

Based on this example, we have figured out that replacing your windows will cost you $2,025.

Frequently Asked Questions

Can I include tax in the calculator?

Yes. If your tax rate applies per window, add it to the Cost per Window input. If you have a lump‑sum tax fee for the entire project, enter that under Additional Cost. The calculator will then display your after‑tax total.