window common sizes

Window Sizes: Common Dimensions & Standard Measurements

By Brian YoungApril 4, 2026

When it comes to home improvement or new construction, one of the most crucial aspects to consider is window sizes. The size of your windows can significantly impact the aesthetics, functionality, and energy efficiency of your space. Understanding common window sizes can help you make informed decisions during your planning process. Let's delve into the world of window dimensions and explore some of the most common sizes you'll encounter.

Windows come in a wide variety of shapes and sizes, each serving a unique purpose. Whether you're looking for a classic casement window to complement your Victorian home or a modern picture window to showcase your panoramic view, understanding common window sizes can help you find the perfect fit for your needs.

Standard Window Sizes

Standard window sizes are typically measured in width by height, with the width always listed first. These sizes are commonly used in residential construction and can be found in a wide range of window styles.

Understanding the Standard Sizes for Bedroom Windows

the measurements of windows and doors are shown

the casement windows are shown in this printable sheet, which shows how many different sizes

Here are some of the most common standard window sizes you'll encounter:

Double Hung Windows

Double hung windows are a popular choice for their functionality and aesthetics. They typically come in the following standard sizes:

Types of Windows Explained | A Visual Guide to Popular Window Styles

the standard size of windows for different types of windows

36" x 54"
48" x 72"
48" x 54"
36" x 72"

Casement Windows

Casement windows are hinged on one side and open outward, providing excellent ventilation. Common casement window sizes include:

24" x 36"
36" x 60"
30" x 48"
36" x 48"

Custom Window Sizes

While standard window sizes are widely available, there may be times when you need a window that doesn't fit into these categories. In such cases, custom window sizes can be ordered to meet your specific needs.

Custom window sizes can be created for any window style, but they may come at a higher cost due to the additional labor and materials required for production. Some common custom window sizes include:

an illustrated guide to the types and sizes of windows in different styles, sizes and colors

different types of windows with the names in each window and how to choose them for your home

Types of Windows with Names and Pictures

the double hung window size chart for each room is shown in blue and white colors

the chart shows different types of windows and their corresponding sizes, with numbers for each window

the different types of windows are shown in this graphic diagram, which shows how to use them

Large Picture Windows

Picture windows are fixed, non-opening windows that are often used to provide a clear, unobstructed view. Custom picture window sizes can range from:

48" x 96"
72" x 96"
48" x 120"
72" x 120"

Awning Windows

Awning windows are hinged at the top and open outward, providing excellent ventilation and privacy. Custom awning window sizes can include:

36" x 60"
48" x 72"
30" x 48"
36" x 48"

When selecting window sizes, it's essential to consider the overall design of your space, the functionality you need, and the energy efficiency of the window. By understanding common window sizes and working with a professional window installer, you can find the perfect windows to enhance your home's aesthetics and functionality.