Free Tool · Window Area Calculator

Window Area Calculator

Use this free calculator to measure total window area in square feet. Knowing your window area helps you estimate costs for window tinting installation and plan your project. Enter each window's width and height to get your total coverage area.

Hands holding a tape measure across a residential window
  • 15+ years of experience
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Enter width & height in inches — totals update instantly.

Quick add
30.0 sq ft
18.0 sq ft
40.0 sq ft

Ready to get a professional estimate?

Our team measures and quotes every project on-site — no obligation. Share your calculator results and we'll provide an exact price for your home or business.

Why do glass measurements matter for a tinting quote?

Glass measurements establish the area to be treated, which is one input in a film quote. They do not determine the whole price. Film specification, access, preparation, and any removal work still need confirmation during the free on-site assessment.

Window tinting is priced per square foot, so knowing your total window area gives you an accurate cost estimate before contacting an installer. Most Houston homes have 150–300 square feet of window glass across all rooms. Larger homes and commercial properties can exceed 500 square feet. Use your total from the calculator above to check window tinting cost per square foot or request a free on-site estimate for exact pricing.

Planning a full-home project? See our residential window tinting services.

What does the window-area result tell you?

The area result describes the measured glass surface, not the final installation price. Use consistent units and count each pane once. An installer still needs to confirm measurements, film selection, access, and removal requirements before turning the area into a written project quote.

For the wider service context, see architectural tinting cost.

01 · Before you decide

Measure the glass rather than the outer frame. Mark unusual shapes separately and let the installer confirm them during the free site visit.

architectural tinting cost

02 · Details to compare

For this decision, compare width, height, units, pane count. Bring the relevant details to the assessment so the recommendation addresses your actual property.

commercial window-film pricing

03 · The next useful step

Continue with our guide to free on-site estimate request. It addresses a related part of the decision so you can check the scope before approving work.

free on-site estimate request

What do Houston-area customers say?

Customers describe their experience with our communication, scheduling, and installation. These individual comments also appear on our reviews page.

★ ★ ★ ★ ★Customer experiences from Houston and Katy
★ ★ ★ ★ ★

“Greenhouse was great, I love my new system. Yousef was very informative and made the entire process easy. Highly recommend!”

C
Calvin Stanley
Google review
★ ★ ★ ★ ★

“Nice guys, good job placing tint on our office windows & doors. Would recommend for anyone looking for tint!”

G
Genesis Back & Neck
Google review
★ ★ ★ ★ ★

“They showed up exactly when they said they would and the work is phenomenal. They were able to match existing tint.”

C
Christopher Stewart
Google review
★ ★ ★ ★ ★

“Communicative and efficient. A friend recommended them and I finally decided to reach out for tinting my patio window. I wish I would have done it sooner.”

C
Connie Nguyen
Google review

Greenhouse Solar Control customer reviews

Frequently asked questions

Measuring, materials, and pricing — answered. Still stuck? Call (281) 961-3058 and we'll help.

Measure each window's width and height in inches, then multiply to get the area. Add all windows together for your total square footage. This calculator does the math for you — enter each window and it totals automatically.
The calculator shows an illustrative 10% allowance, not a required purchase quantity. Actual material needs depend on pane sizes, film-roll width, layout, and trimming. The installer measures on site and accounts for the required material in the final quote.
Residential window tinting in Houston costs $6–$14 per square foot depending on film type. Ceramic film runs higher than standard reflective. See full pricing details.
Use our tint percentage calculator to compare VLT levels and see how dark different tint shades appear on your windows.
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Tell us about your home or building and we'll recommend the right film, with a written quote and our workmanship guarantee.