When it comes to outfitting your home with new windows, one of the first decisions you'll need to make is the size of your replacement or new window. Standard bedroom window sizes can vary depending on the room's layout, personal preference, and the window style you choose. However, there are some common sizes that you'll encounter during your search.

It's essential to consider that window sizes are typically measured in width by height, with the width usually being the first dimension. Before diving into the various sizes, it's crucial to understand that window sizes often come in fixed, standard proportions that may not perfectly match the rough opening in your room. This is because window manufacturers often produce their products in specific sizes that cater to the broadest consumer base.

Commonly Available Sizes in Width by Height (in inches)
Below, you'll find a list of commonly available window sizes. Remember that these are general guidelines, and actual measurements may vary slightly depending on the specific product or manufacturer.

As you'll notice, some window sizes are quite generous, allowing for ample natural light and enhanced views, while others may be better suited for smaller or more uniquely shaped windows.
Double-Hung Windows

Double-hung windows are among the most popular choices for bedrooms due to their classic design and functionality. They typically come in sizes ranging from 36 inches to 72 inches in width and 36 inches to 72 inches in height, with some larger custom sizes available.
Here are some popular double-hung window sizes:
- 36" x 36" - Perfect for small bedrooms or rooms with low ceilings
- 48" x 36" - A common size that provides a good balance between width and height
- 60" x 72" - Ideal for larger bedrooms or great rooms with high ceilings

Casement Windows
Casement windows, which hinge on one side and swing open like a door, can provide wide, unimpeded views and excellent ventilation. They typically range from 24 inches to 48 inches in width and 36 inches to 72 inches in height, with custom sizes also available.
Some common casement window sizes are:

- 36" x 60" - A standard size that offers a good view and adequate ventilation
- 48" x 72" - Ideal for larger bedrooms or rooms with high ceilings
- 24" x 36" - Suitable for smaller bedrooms or secondary windows
Unique Bedroom Window Shapes and Sizes




















While standard window sizes can accommodate most bedrooms, there may be instances where unique window shapes and sizes are necessary. In these cases, custom or uniquely sized windows can be ordered from specialty manufacturers.
Some unique bedroom window shapes and sizes include:
Awning Windows
Awning windows are hinged at the top and swing outward. They typically come in widths ranging from 24 inches to 48 inches and heights from 24 inches to 60 inches. However, custom sizes are available for wider or taller openings.
Picture Windows
Picture windows are large, fixed windows that do not open. They are ideal for showcasing beautiful views and allowing ample natural light. Custom picture windows can be made to fit specific room dimensions, but some common heights and widths include:
- 48" x 96" - A popular size for new construction or large wall openings
- 60" x 72" - Suitable for mid-sized rooms or walls with standard 8-foot ceilings
When selecting standard or custom bedroom window sizes, consider the room's dimensions, desired level of natural light, views, and ventilation needs. It's always a good idea to measure your rough openings and compare them to the available window sizes before making a final decision. By doing so, you'll ensure a proper fit and optimize the functionality and aesthetic appeal of your new windows.