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What Is the Most Common Window Size? Standard Window Sizes


Installing or replacing windows is no easy task. In addition to choosing the type of windows, you also need to consider the size, framing materials, and number of panes. It goes without saying that windows come in all shapes and sizes. Fortunately, manufacturers have standard window sizes to ease the burden of crafting, manufacturing and installing windows. So, what is the most common window size that you can find and need?

Standard Window Sizes

Average Standard Window: 24×36
24″ wide (up to 28, 32, 40 inches)
36″ tall (up to 44, 52, 54, 62, 72 inches)

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What Is the Most Common Window Size?

In this article, our designers will be discussing the most common window size as well as different types of windows and their respective sizes for when you’re ready to replace your windows or install ones into your new home. This article will also go over how to determine the window sizes you need for every room. 

Standard Window Sizes & Measurements

When measuring a window to determine the standard size, you’ll need to start by measuring the size of the rough opening (the measurement from the inside of one side of the window frame to the other). Manufacturers, therefore, find the standard size of your window by deducting half and inch for flashing materials and for the window to operate properly.

The Most Common Window Size

A 2020 standard window is one of the most common window sizes you’ll come across in most homes, small-scale office buildings and apartments. This window size typically refers to a 24×24-inch frame. However, half an inch is usually trimmed off the length and width of the window to give plenty of room for installation. Also keep in mind that there are different types of window frames that may affect the size of the windows.

What Is The Most Common Window Size

Double Hung Windows

These are the most common window types in homes across the US. Since they’re so popular, they come in a wide range of sizes. Double hung windows typically range between 24 and 48 inches in width and 36-72 inches in height.

Standard Size Starts from 24×48″

Picture Windows

Picture windows are big and beautiful, designed to provide maximum natural lighting for rooms with lots of space, such as living rooms and entertainment areas. Picture windows also come in several standard sizes, ranging from 24-96 inches in width and 12-96 inches in height.

Standard sizes up to 5′ wide and 6′ high

Common Window Size

Sliding Windows

Sliding windows are popular for their functionality and that’s why you’ll likely find them in kitchens, bedrooms, basements, etc. They come in standard sizes ranging from 36-84 inches in width and 24-60 inches in height.

Bay Windows

These types of windows work well to emphasize and exemplify areas of your home you want to shine. Some other benefits of bay windows include that they provide a great view of the outdoors and offer excellent natural lighting. Bay windows come in sizes ranging from 3’6” to 10’6” in width and 3’’ to 6’6” in height.

Casement Windows

Also referred to as hinged windows, casement windows are designed to open from the side with a crank. They’re ideal for warm climate areas or areas of the home that can benefit from extra ventilation, such as a kitchen or bathroom. Standard sizes include widths in the 1’2” to 2’11.5” range and heights ranging from 2 ‘5.5 to 6’5.5”.

Awning Windows

Awning windows are hinged at the top and open outward, offering plenty of ventilation like casement windows. Standard sizes for awning windows include widths ranging from 2’to 5’and heights ranging from 1’8” to 3’6”.

Most Common Window Sizes

So, What Is The Most Common Window Size?

The most common window size or average window size is 24×36. All common window sizes & dimensions for fixed, standard & double-hung windows can differ on manufacture. At PHX ID, we are happy to further discuss “What is the most common window size?” and options for standard or custom replacement. However, be sure to hire a professional window installer to ensure your windows are fit well and function properly. Do your due diligence and hire an installer who will guarantee quality work. With the help of this guide, readers will have a better understanding on which are the best windows for a new construction home, and the basics of choosing windows and be able to enjoy the benefits of having new windows.



Common Window Size FAQ

  1. What are the most common window sizes? The most common window sizes are 24 inches by 36 inches, 30 inches by 54 inches, 36 inches by 60 inches, and 48 inches by 60 inches. These sizes are popular because they can fit into a variety of openings and provide an adequate amount of natural light.

  2. Can I customize the size of my windows? Yes, you can customize the size of your windows to fit your specific needs. Many window manufacturers offer the option to create custom window sizes, although there may be an additional cost for this service.

  3. What factors should I consider when choosing a window size? When choosing a window size, you should consider the size of the opening, the amount of natural light you want to let in, and the style of the window. You should also think about the overall aesthetic of the room and whether the window size will complement the space.

  4. Can I change the size of an existing window opening? It is possible to change the size of an existing window opening, but it requires significant construction work and may not be a practical or cost-effective solution. It is usually easier and more cost-effective to choose a window size that fits the existing opening.