Standard Window Sizes: Which Suits You Best?

As you probably know, no matter which type of window you decide to install in your house, you can find it in a few standard window sizes. They are always designed to fit into regular rough openings in conventional homes.

If you prefer something special or need non-standard window dimensions, you can order a custom window, as well. However, be prepared that such an order will increase overall costs. If you prefer standard windows, let’s consider your options.

Standard Window Sizes

Before you start looking for an ideal window solution for your home, you should learn basic things about the way of specifying the standard window sizes.

The rule is that four digits on the package always determine the required dimension. The first two numbers show you the width of the particular window, and the other two are connected with its height. For example:

If the window is marked with the digits 3020, that means this model is 3 feet (36 inches / 91.5 cm) wide and 2 feet (24 inches / 61 cm) high.

However, if you need to purchase a window that is 46 inches (1.2 m) wide and 92 inches (2.3 m) high, you should pick out the one noted as 3178. In such a case, you need to convert inches to feet.

If you are not a professional, you probably have no clue what standard window size fits your home. In most cases, the dimensions of the living room window don’t vary much.

However, the measures of the kitchen and bathroom windows will depend on the size of these rooms. Therefore, I will give you some standard options to make the process of choosing much more comfortable for you.

Standard kitchen window size

Standard kitchen window size

Three standard window sizes are most common for the kitchen:

Standard picture window size:

  • Width – From 24 to 96 inches (61 cm – 2.4 m)
  • Height – From 12 to 96 inches (30.5 cm – 2.4 m)

Standard double-hung window size:

  • Width – From 24 to 48 inches (61 cm – 1.2 m)
  • Height – From 36 to 72 inches (0.9 – 1.8 m)

Standard casement window sizes:

  • Width – From 14 to 35.5 inches (35.5 cm – 0.9 m)
  • Height – From 17 to 73 inches (43 cm – 1.9 m)

Standard bathroom window size

Standard bathroom window size

Two standard window sizes are most common for bathrooms:

Standard sliding window size:

  • Width – From 36 to 84 inches (0.9 – 2.1 m)
  • Height – From 24 to 60 inches (61 cm – 1.5 m)

Standard picture window size:

  • Width – From 24 to 96 inches (61 cm – 2.4 m)
  • Height – From 12 to 96 inches (30.5 cm – 2.4 m)

Most Common Standard Window Sizes

1. Double-hung window sizes

Double-hung window sizes

It is definitely the most familiar and popular type of replacement window in the US. It has one movable sash on top while the other is on the bottom. That allows it to move in both directions, from the bottom up and from the top down.

You can find it in a wide range of standard window sizes regardless of whether of the dimensions of the rough opening in your house wall. That means you can install one in your bedroom, hallways, bathroom, or kitchen, as well.

  • The standard width of the double-hung window is anywhere from 24 to 48 inches (61 cm – 1.2 m)
  • The standard height of the double-hung window is anywhere from 36 to 72 inches (0.9 – 1.8 m)

2. Bay window sizes

Bay window sizes

The bay window is a type of projection window. That means you have a window projected outward from the exterior of your home. It contains one large, fixed window panes and two smaller side windows (flankers), placed at an angle of 30 or 45 degrees to the wall.

This model will open up your living room and provide a full view of your garden from three sides. Plus, such a window will add beautiful architectural details to the facade of your house.

  • The standard width of the bay window is anywhere from 42 to 126 inches (1 – 3 m)
  • The standard height of the bay window is anywhere from 36 to 78 inches (91 cm – 2 m)

If standard window sizes don’t fit your house and you look for a larger model, there is a possibility to pick out some custom sizes. However, be prepared for additional costs in such a case.

3. Sliding window sizes

Sliding window sizes

You can install the sliding windows in every part of the house where the opening of the window panes is impossible for any reason. It is a convenient option for your kitchen, bathroom, bedroom, and even basement.

Since you can find them in numerous standard window sizes, you can quickly change both the functionality and styling of your space. You can pick out either a two-section or three-section slider depending on your preferences and the dimensions of existing window openings.

Keep in mind that these windows are always wider than longer. To avoid unpleasant surprises, make all the necessary measurements before making a plan to install such a window into an existing opening in the wall.

  • The standard width of the sliding window is anywhere from 36 to 84 inches (91 cm – 2.1 m)
  • The standard height of the sliding window is anywhere from 24 to 60 inches (61 cm – 1.5 m)

4. Picture window sizes

If you have at least one picture window, you know how reliable and convenient it is. That is the type of window designed to beautify your home and allow the entry of light.

Keep in mind that you can’t open most of them, which is a huge advantage when it is about their sizes. Install this window wherever you need a light without the possibility to open it, including your living room or kitchen, for example.

I highly recommend these windows as an excellent and energy-efficient solution. Since they have non-opening fixed window panes, they prevent air circulation and energy loss. That will increase the temperature in your house and reduce your electricity bills. You can look for standard window sizes of this particular model in a range of:

  • The standard width of the picture window is anywhere from 24 to 96 inches (61 cm – 2.4 m)
  • The standard height of the picture window is anywhere from 12 to 96 inches (30.5 cm – 2.4 m)

5. Casement window sizes

Casement window sizes

The casement windows are quite unusual replacement windows, but they will provide full ventilation to your space from top to bottom. You will enjoy this model if you live in a warm region and depend on the breeze.

These windows are hinged on the side, and you can open them outward to both the right or left side. Most people install them above a kitchen sink or in the bathroom since they provide the necessary flexibility.

  • The standard width of the casement window is anywhere from 14 to 35.5 inches (35.5 – 90 cm)
  • The standard height of the casement window is anywhere from 29.5 to 77.5 inches (75 cm – 1.95 m)

6. Awning window sizes

An awning window is not just an attractive but also a practical option for your home. It provides a wide view of the outside and excellent security. Additionally, this model will improve airflow and ensure a comfortable stay at home even during the hottest months.

It is one of the models hinged at the top. The advantage of this weatherproof option is that you can open it outward quickly, even during light rain. Standard window sizes may vary, and you can find them in different ranges of heights and widths on the market.

  • The standard width of the awning window is anywhere from 24 to 46 inches (61 cm – 1.2 m)
  • The standard height of the awning window is anywhere from 20 to 92 inches (51 cm – 2.3 m)

Why Your Windows Are Not a Standard Size?

Believe it or not, it is not rare at all. In fact, there are a lot of houses with non-standard window sizes in the US. That usually means your home was built before the standards were changed, but include more other factors, such as:

  • The region you live in – Yes, the size of your windows depends on the state where you live. That means openings will vary depending on the style fitting the regional design and the material used to build the houses in the past.
  • Construction time – If the size of the windows in your house doesn’t fit standard window sizes, the most common reason is the period your home was built. Those measures were conventional then, and they followed the traditional style according to those times.
  • Age of the house – You can expect that windows and their frames change over time along with the facade. Consequently, the time will affect the size of the window opening.
  • Replacement windows – The fact is that new construction windows are different than old ones. Therefore, you will need an accurate measurement before replacing your old windows with modern ones.

Summary

I believe that you should consider replacing old windows for many reasons. They will improve the safety and comfort of your home. Also, new windows will reduce air leakage and prevent moisture.

Therefore, talk to professionals about your options and go for it!

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