What Is The Standard Window Size?

The term standard window size might be confusing as there are several types of windows. Homeowners can easily customize windows for their homes. The standard size of a window will vary depending on the type of window you choose. Luckily, manufacturers have standard sizes to lessen the burden of installing windows. Keep on reading to learn more about the standard window size for your home.

What Is The Standard Window Size?

The standard window size is around 24 to 48 inches wide and 36 to 72 inches high. This is the most common window known as a double-hung window. The standard window size in square meters is 2 feet wide by 3 feet high. Double-hung windows are the same as single-hung windows in terms of measurements. Such windows are mostly used in bedrooms. Thus, the standard window size for the bedroom is 24” x 36”. The width of this window can also be 36”, 48”, and 60”.

Windows provide sunlight to the kitchen in a typical home. While building a new house, you must be wondering about the standard window size for the kitchen. The size of the kitchen window is the same as the bedroom window. 

Window size will vary by room and window type. Therefore, the standard window size for the bathroom is also different. Sliding windows and picture windows are widely used for bathrooms. The width of sliding windows ranges from 36 to 84 inches and the height range from 24 to 60 inches. Similarly, the width of picture windows ranges from 24 to 96 inches and the height ranges from 12 to 96 inches.

You can keep on reading further to know more about what is a standard window size.

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Common Standard House Window Sizes

Windows are one of the most important parts of every house. Here, I’ve included other standard window sizes in meters.

  • Bay Window

A bay window is a projection window that is projected outward from the exterior of your home. This type of window will open up your living room giving a full view of your garden from three sides. The width of the bay window is anywhere from 1 to 3 meters (42 to 126 inches). While its height is anywhere from 91 cm to 2 m (36 to 78 inches).

  • Casement Window

Casement windows are widely used to provide full ventilation to your space from top to bottom. It is very useful when you live in a warm region. The width of the casement window is 35.5 to 90 cm (14 to 35.5 inches). While its height is 75 cm to 1.95 m (29.5 to 77.5 inches).

  • Awning Window

Awning windows provide a wide view of the outside ensuring a comfortable stay at home. You can find this window in different ranges of height and width. However, the standard width of this window is 61 cm to 1.2 m (24 to 46 inches). And the height of this window is 51 cm to 2.3 m (20 to 92 inches).

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What Is The Most Common Window Size?


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.

What Are Some Standard Size Windows?

Widths can be 2 feet, 3 feet, 4 feet, 5 feet, 6 feet, and 8 feet. Standard heights can range from 2 feet tall to 8 feet tall, with additional heights of 18, 52, 54, and 62 inches. Rough openings are in whole numbers, while 1/2 inch is taken from each rough opening size to get the actual window size.

What Is A Standard Bedroom Window Size?

A window’s standard size is dependent on many factors, such as when the house was built or how proportionate it is to the house, to name a few. With that said, the most common window size is 24” x 36”. Standard bedroom window widths are 36”, 48” and 60”.

How Do I Know My Window Size?

Place a tape measure horizontally between the inside jamb on the left and the right. Close the window and make a similar measurement from jamb to jamb near the middle of the window. Measure the distance between the jambs at the top of the window. Record the shortest measurement.

What Size Are Most House Windows?

As the typical choice for new homes, double-hung models come in a few standard window sizes:

  • The standard width for double-hung windows ranges from 24 inches to 48 inches.
  • Standard heights for double-hung windows range from 36 to 72 inches.

Is 34 A Standard Window Size?

Sliding windows’ standard sizes have widths that range from 36-inches to 84-inches and heights that start at 24-inches to 60-inches tall. Common and standard sliding window widths are: 36-inches. 48-inches.

How Are Window Sizes Expressed?

The notation is the combined width and height, and is always a whole number for the rough opening, even though the actual measurements are usually ½ inch less. A 2426 window measures 2 feet, 4 inches by 2 feet, 6 inches. The first two numbers are for the window’s width, while the second two define the window’s height.


The standard window sizes in inches are around 24 to 48 inches wide and 36 to 72 inches high. Windows improve the safety and comfort of your home. You can also talk to professionals to know more about sizing options. Once you are aware of the standard window size, you can easily customize your home!

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