Standard Window Size | 100+ Complete Standard Size of Window

The standard window size depends upon the type of window you choose. The different window requires different standard window sizes. Generally, Window manufacturers keep ½ inch on all the sides of the window, that is window width and window height. This allows for the easy installation of the windows.

Standard sizes of windows are shown for different types of windows. Window sizes also differ according to the place of installation like living room, bedroom, bathroom, kitchen, etc.

Learn everything you need to know about the standard size of windows. From understanding the importance of window dimensions to choosing the right size for your home, this detailed guide covers it all.

Standard Size of Window

Windows come in various shapes and sizes, and understanding the standard dimensions is essential when planning a construction project or renovating a property. Here’s an overview of the standard window sizes:

Window Type	Standard Size (inches)	Standard Size (centimeters)
Single Hung	24 x 36	61 x 91
Double Hung	24 x 48	61 x 122
Casement	20 x 24	51 x 61
Awning	24 x 16	61 x 41
Sliding	36 x 24	91 x 61
Picture	28 x 22	71 x 56
Bay	60 x 48	152 x 122
Bow	73 x 37	185 x 94
Skylight	22 x 46	56 x 117
Fixed	30 x 36	76 x 91
Garden	36 x 36	91 x 91
Jalousie	24 x 48	61 x 122
Sliding Glass	72 x 48	183 x 122
Transom	12 x 24	30 x 61
Clerestory	24 x 36	61 x 91
Sashless	24 x 36	61 x 91
French	72 x 80	183 x 203
Bi-fold	72 x 80	183 x 203
Corner	48 x 48	122 x 122
Palladian	48 x 72	122 x 183
Arched	24 x 36	61 x 91
Elliptical	24 x 36	61 x 91
Circular	36-inch diameter	91 cm diameter
Hexagonal	24 x 24	61 x 61
Octagonal	24 x 24	61 x 61

These standard window size are common in the United States and may vary in other regions. It’s important to note that custom window sizes are also available to accommodate unique architectural designs and specific requirements.

Different Types of Window and Standard Window Size

Window Type	Description	Typical Width	Typical Height
Single Hung Windows	Two sashes, only the bottom one is movable	24 to 48 inches	36 to 72 inches
Double Hung Windows	Both sashes are movable for better ventilation	24 to 48 inches	36 to 72 inches
Casement Windows	Hinged on one side, open outward like a door	20 to 40 inches	24 to 72 inches
Awning Windows	Hinged at the top, open outward from the bottom	24 to 48 inches	24 to 36 inches
Sliding Windows	Two sashes, one sliding horizontally over the other	36 to 84 inches	24 to 60 inches
Picture Windows	Fixed windows for unobstructed views and light	2 to 8 feet	2 to 8 feet
Bay Windows	Extend outward, center picture window with side windows	3 to 10 feet	3 to 6 feet
Bow Windows	Curved shape, gentle arc projection	4 to 10 feet	4 to 6 feet
Skylight Windows	Installed in the roof or ceiling for natural light	Varies	Varies
Jalousie Windows	Horizontal glass slats that open and close in unison	18 to 48 inches	18 to 72 inches
Fixed Windows	Non-opening, for aesthetics and views	Varies	Varies
Transom Windows	Narrow windows above doors or other windows	12 to 48 inches	6 to 18 inches
Clerestory Windows	High, narrow windows near the roofline for light	Varies	1 to 3 feet
Hopper Windows	Hinged at the bottom, open inward	18 to 36 inches	12 to 18 inches
Bay Window Bow Window Windows	Combination of bay and bow windows	Varies	Varies
Geometric Windows	Various shapes like circles, triangles, etc.	Varies	Varies
Sash Windows	Vertical sliding panels for opening	24 to 48 inches	36 to 72 inches
Garden Windows	Extend outward for plants or decorations	36 to 48 inches	24 to 36 inches
Corner Windows	Wrap around corners, maximizing views	Varies	Varies
Pivot Windows	Rotate horizontally or vertically for cleaning	24 to 36 inches	24 to 60 inches
Arched Windows	Curved or rounded top for elegance	Varies	Varies
Tilt and Turn Windows	Dual opening options for ventilation and access	24 to 48 inches	36 to 72 inches
Oriel Windows	Projections from upper stories with support	Varies	Varies
Ribbon Windows	Horizontal bands of windows for modern architecture	Varies	Varies
Stained Glass Windows	Colored glass artworks for artistic appeal	Varies	Varies

There are various types of windows, each offering different functionalities and styles. Here are some common types of windows along with their typical sizes:

Single Hung Windows

These windows have two sashes, but only the bottom one is movable.

Standard window size: Width between 24 to 48 inches (61 to 122 cm) and height between 36 to 72 inches (91 to 183 cm).

Double Hung Windows

Both sashes in these windows are movable, allowing for better ventilation.

Typical size: Width between 24 to 48 inches (61 to 122 cm) and height between 36 to 72 inches (91 to 183 cm).

Casement Windows

Casement windows are hinged on one side and open outward like a door.

Typical size: Width between 20 to 40 inches (51 to 102 cm) and height between 24 to 72 inches (61 to 183 cm).

Awning Windows

Similar to casement windows but hinged at the top, opening outward from the bottom.

Standard window size: Width between 24 to 48 inches (61 to 122 cm) and height between 24 to 36 inches (61 to 91 cm).

Sliding Windows

These windows have two sashes, with one sliding horizontally over the other.

Typical size: Width between 36 to 84 inches (91 to 213 cm) and height between 24 to 60 inches (61 to 152 cm).

Picture Windows

Fixed windows designed to provide unobstructed views and natural light.

Standard window size: Width between 2 to 8 feet (61 to 244 cm) and height between 2 to 8 feet (61 to 244 cm).

Bay Windows

These windows extend outward from the wall, usually with a center picture window and two smaller side windows.

Typical size: Width can vary greatly but often between 3 to 10 feet (91 to 305 cm) and height between 3 to 6 feet (91 to 183 cm).

Bow Windows

Similar to bay windows but with a curved shape, creating a gentle arc.

Standard window size: Width can vary greatly but often between 4 to 10 feet (122 to 305 cm) and height between 4 to 6 feet (122 to 183 cm).

Skylight Windows

Skylights are installed in the roof or ceiling to allow natural light into a room.

Standard window size: Can vary widely, but common sizes are around 2 to 4 feet (61 to 122 cm) wide and 3 to 6 feet (91 to 183 cm) long.

Jalousie Windows

Jalousie windows consist of multiple horizontal glass slats that open and close in unison.

Standard window size: Width between 18 to 48 inches (46 to 122 cm) and height between 18 to 72 inches (46 to 183 cm).

Fixed Windows

Fixed windows, as the name suggests, do not open and are meant for aesthetic appeal and unobstructed views.

Typical size: Width and height can vary significantly based on design and architectural preferences.

Transom Windows

These narrow windows are typically installed above doors or other windows to add more light and decorative detail.

Typical size: Width between 12 to 48 inches (30 to 122 cm) and height between 6 to 18 inches (15 to 46 cm).

Clerestory Windows

Clerestory windows are high, narrow windows located near the roofline to bring light into a room without compromising privacy.

Standard window size: Width can vary, but height is often between 1 to 3 feet (30 to 91 cm).

Hopper Windows

Hopper windows are hinged at the bottom and open inward, typically found in basements or small spaces.

Typical size: Width between 18 to 36 inches (46 to 91 cm) and height between 12 to 18 inches (30 to 46 cm).

Bay Window Bow Window Windows

Combination windows that extend outward like bay windows but in a curved, gentle bow shape like bow windows.

Standard window size: Width and height can vary significantly based on the design and architectural layout.

Geometric Windows

Geometric windows come in various shapes, such as circles, triangles, hexagons, etc., to add visual interest and uniqueness to a building’s design.

Standard window size: Varies depending on the specific geometric shape and purpose.

Sash Windows

Sash windows have one or more movable panels or “sashes” that slide vertically to open and close.

Standard window size: Width between 24 to 48 inches (61 to 122 cm) and height between 36 to 72 inches (91 to 183 cm).

Garden Windows

Garden windows extend outward from the wall, providing space for plants or decorations.

Typical size: Width between 36 to 48 inches (91 to 122 cm) and height between 24 to 36 inches (61 to 91 cm).

Corner Windows

Corner windows are designed to wrap around the corner of a building, creating a striking visual effect and maximizing views.

Standard window size: Width and height can vary significantly based on the architectural layout and purpose.

Pivot Windows

Pivot windows have a unique hinge mechanism that allows them to rotate horizontally or vertically, facilitating easy cleaning and ventilation.

Standard window size: Width between 24 to 36 inches (61 to 91 cm) and height between 24 to 60 inches (61 to 152 cm).

Arched Windows

Arched windows feature a curved or rounded top, adding elegance and architectural interest to a building’s facade.

Typical size: Width and height can vary based on the size of the arch and the overall window dimensions.

Tilt and Turn Windows

Tilt and turn windows offer two opening options: tilting inwards at the top for ventilation or swinging open like a casement window.

Typical size: Width between 24 to 48 inches (61 to 122 cm) and height between 36 to 72 inches (91 to 183 cm).

Oriel Windows

Oriel windows are architectural projections from an upper story, supported by brackets or corbels.

Standard window size: Width and height can vary based on the size and design of the oriel projection.

Ribbon Windows:

Ribbon windows are horizontal bands of windows, often used in modern architecture to provide continuous light and expansive views.

Typical size: Width can vary greatly based on the building’s design and purpose.

Stained Glass Windows:

Stained glass windows are artistic creations made from colored glass, adding beauty and intricacy to churches, cathedrals, and historic buildings.

Typical size: Varies widely depending on the overall stained glass artwork’s dimensions.

Standard Height and Size of Window

Window Type	Typical Width (inches)	Typical Width (centimeters)	Typical Height (inches)	Typical Height (centimeters)
Single Hung Windows	24 – 48	61 – 122	36 – 72	91 – 183
Double Hung Windows	24 – 48	61 – 122	36 – 72	91 – 183
Casement Windows	20 – 40	51 – 102	24 – 72	61 – 183
Awning Windows	24 – 48	61 – 122	24 – 36	61 – 91
Sliding Windows	36 – 84	91 – 213	24 – 60	61 – 152
Picture Windows	24 – 96	61 – 244	18 – 96	46 – 244
Bay Windows	36 – 120	91 – 305	36 – 72	91 – 183
Bow Windows	48 – 120	122 – 305	48 – 72	122 – 183
Skylight Windows	Varies	Varies	Varies	Varies
Jalousie Windows	18 – 48	46 – 122	18 – 72	46 – 183
Fixed Windows	Varies	Varies	Varies	Varies
Transom Windows	12 – 48	30 – 122	6 – 18	15 – 46
Clerestory Windows	Varies	Varies	12 – 36	30 – 91
Hopper Windows	18 – 36	46 – 91	12 – 18	30 – 46
Bay Window Bow Window Windows	Varies	Varies	Varies	Varies
Geometric Windows	Varies	Varies	Varies	Varies
Sash Windows	24 – 48	61 – 122	36 – 72	91 – 183
Garden Windows	36 – 48	91 – 122	24 – 36	61 – 91
Corner Windows	Varies	Varies	Varies	Varies
Pivot Windows	24 – 36	61 – 91	24 – 60	61 – 152
Arched Windows	Varies	Varies	Varies	Varies
Tilt and Turn Windows	24 – 48	61 – 122	36 – 72	91 – 183
Oriel Windows	Varies	Varies	Varies	Varies
Ribbon Windows	Varies	Varies	Varies	Varies
Stained Glass Windows	Varies	Varies	Varies	Varies

Factors Influencing Window Size

Several factors influence the standard size of windows in residential and commercial buildings. Understanding these factors will help you make informed decisions while choosing the appropriate window dimensions for your space.

1. Architectural Style

Different architectural styles often call for specific window sizes. For instance, traditional colonial-style homes typically have symmetrical windows, while modern architectural designs may feature larger, floor-to-ceiling windows to maximize natural light and offer stunning views.

2. Room Type and Function

The size of windows in various rooms can vary based on their function. For example, windows in living rooms and bedrooms are generally larger to allow ample natural light, while those in bathrooms and hallways may be smaller for privacy and ventilation.

3. Building Codes and Regulations

Local building codes and regulations play a significant role in determining the allowable window sizes. Compliance with these codes ensures safety, energy efficiency, and proper ventilation within the building.

4. Energy Efficiency

Window size affects the energy efficiency of a building. Larger windows may result in more heat gain during summers and heat loss during winters. Energy-efficient windows with proper insulation and glazing can help maintain a comfortable indoor temperature.

Choosing the Right Window Size

Selecting the standard window size is essential for both functional and aesthetic reasons. Here are some tips to guide you through the process:

1. Assess Natural Light Needs

Consider the amount of natural light needed in each room. For spaces that require ample daylight, opt for larger windows. East-facing windows offer morning sunlight, while west-facing windows provide afternoon sunlight.

2. Maintain Proportions

Ensure that the window size complements the overall proportions of the room and the building’s exterior. Too small windows can make a space feel cramped, while excessively large ones may overwhelm the architecture.

3. Optimize Ventilation

Proper ventilation is crucial for indoor air quality. Choose window sizes that allow sufficient airflow to promote a healthy living environment.

4. Embrace Energy Efficiency

Invest in energy-efficient windows with quality glazing and insulation to reduce heating and cooling costs and create a more sustainable building.

5. Consider Privacy

Balance the desire for natural light with the need for privacy. Install larger windows in rooms with unobstructed views and smaller ones in private areas.

Frequently Asked Questions on Window Size

Conclusion

Understanding the standard size of windows is crucial for anyone involved in the construction, renovation, or interior design industry. By considering architectural styles, room functions, and energy efficiency, you can select the perfect window dimensions to enhance your living or working spaces.

Whether you opt for traditional single-hung windows or contemporary floor-to-ceiling ones, your choice of window size will significantly impact the overall aesthetics and functionality of your property. So, take the time to assess your needs and consult with professionals to ensure you make the right decision when it comes to window sizes.