Editorial note: Homefront (defined in the Disclosure below) may earn a commission from affiliate partner links featured on our site. This commission does not influence our editors’ opinions or evaluations.
Jennifer Farrington is a contributing writer at USA TODAY Homefront. She is a Florida native who has more than a decade of writing and editing experience. Jennifer has covered everything from real estate and insurance to personal finance and entertainment.
Standard window sizes are designed using dimensions that typically fit new constructions.
Window widths are 2 to 4 feet wide, and standard heights are 3, 4 or 6 feet.
If your window frame can’t support a standard window size, a custom-size window may be cheaper.
Unlike custom windows, designed to fit your requested shape and size, standard window sizes are built to predefined dimensions that typically fit most new homes. They represent the most common window sizes for different types of windows and can save you time finding the best window size during window installations.
A licensed professional can install a standard-size window in about 60 minutes, according to Pella, a direct-to-consumer window provider. Plus, most home improvement retailers, such as Home Depot and Lowe’s, keep inventory readily available and offer same-day pickup.
In contrast, custom window installation can take six to 12 weeks or more from the order date to delivery, said David Heim, a retired Broward County, Florida, contractor with 17 years of industry experience installing windows. That’s a serious discrepancy in project length.
Overall, standard windows are more practical, come in various styles and cost less than custom windows. Generally, you’ll pay 30% to 75% more for custom sizes; this is because the manufacturing equipment has to be reset for each custom-size window, Heim said.
While it differs by window type, standard widths typically range from 2 to 4 feet, and standard heights are 3, 4 and 6 feet, according to Heim.
When you know what size you need, get quotes for new or replacement windows from window providers.
Retailers, window manufacturers and installers denote window measurements using a four-digit numbering system representing window height and width. For a window measuring 24 inches wide by 36 inches tall, the size is 2030.
The first two digits of this window size notation represent the feet and inches of the width — 24 inches equals 2 feet and 0 inches — while the third and fourth digits represent the feet and inches of the height — 36 inches equals 3 feet and 0 inches.
Tip
When measuring the size of your window, the rough opening size (the space where the window will be installed) is between 3/4 inch and 1 inch larger than the actual window. The actual dimensions of the window should be marginally smaller than the measurements of this opening.
Each window type comes in more standard sizes than the ones listed below. We chose the most common sizes you’ll likely encounter during your next window replacement project, rounded to the nearest inch.
Awning windows
Bay windows
Casement windows
Hopper windows
Picture windows
Single- and double-hung windows
Awning windows hinge at the top and open outward with a crank. Their small size and easy installation are ideal for placement in bathrooms or above doors. Awning windows are less prone to air leakage, thanks to the sash that closes by pushing against the frame.
Standard awning window sizes include the following:
Traditional bay windows consist of three windows — a large middle window flanked by two smaller ones — they angle outward at 30- or 45-degree angles. Bay windows elegantly expand your living space while inviting ample natural light indoors. Large bay and bow windows fit nicely into common areas such as dining and living rooms while small ones are more suitable for bedrooms.
Common standard sizes for bay windows are rounded to the nearest inch and include the following:
Casement windows are sold as vent or fixed varieties. Fixed casement windows don’t open, while vent casement windows swing out from one side using a crank. Most extend open to a 90-degree angle. Vent casement windows allow for optimal ventilation and lower leakage rates than sliding windows due to the pressure from the closure mechanism.
Standard casement window sizes include the following:
Hopper windows are designed with a hinge at the bottom and open inward with a crank — think of them as reverse awning windows. The crank mechanism helps to reduce air leakage.
Standard hopper window sizes include the following:
Tip: Hopper windows generally need to be installed in an opening at least 2 inches wider and 2 inches taller than the window itself to ensure proper installation, according to Thomas Creek Window Company.
True to their name, picture windows mimic the appearance of framed pictures, offering expansive, unobstructed views of the outside scenery. These windows are typically fixed — they don’t move — and can be installed higher on walls. Picture windows are often available in larger sizes than other window types.
Standard picture window sizes include the following:
Double-hung windows have two sashes that slide open vertically. While they have higher air leakage rates, they provide ample natural light and can easily be tilted open and cleaned from inside your home.
Single-hung windows boast better energy efficiency but only the bottom sash is operable.
Both single- and double-hung windows are usually available in the same sizes. Common standard sizes include the following:
Yes, you must comply with certain building codes when installing or replacing windows. These codes are designed with safety in mind, emphasizing the importance of hiring a reputable window professional to handle installations or verify proper installation if you choose to install windows yourself.
Some window installation regulations vary by state, but there are basic standards that apply on a national level.
Windows within 24 inches of a door must be made of tempered glass, per R308.4.2. of the 2018 International Residential Code.
Basements, bedrooms and attics with sleeping arrangements must have at least one egress window (unless there is an operable door) that opens to a yard. The window must have a minimum width of 36 inches. Additionally, it must comply with the following stipulations:
Kitchen windows aren’t required in homes and there are no set regulations to adhere to, giving you the freedom to select their size and design according to your preferences.
Although windows are not mandatory in bathrooms, adequate ventilation is necessary. If you opt to install a window, it should have a minimum area of 3 square feet and be capable of opening at least 50%.
If your window already has a frame that can’t support a standard window size, choosing a custom size window may be more affordable. Retrofitting the existing window frame would require new technology or features to support a standard size, which could get expensive.
For example, replacing a custom window with a standard-size window might require cutting the frame to make the opening larger or smaller. This added cost typically overrides the money you would save purchasing a standard-size window over a custom one.
You may also consider investing in a custom window if you want to switch window types.
Choosing between standard and custom windows is only one factor to consider when buying home windows. You’ll also need to decide on frame type, gas fills, operation type, spacers and glazing.
The U.S. Department of Energy (DOE) recommends purchasing a window bearing an Energy Star label, allowing you to review and compare window energy ratings from the National Fenestration Rating Council.
Windows are responsible for 25% to 30% of residential heating and cooling energy use. The DOE recommends heavily weighing window energy efficiency features.
Remember that the prices advertised for most standard windows by major home improvement stores, such as Home Depot and Lowe’s, typically exclude permitting and installation fees and taxes.
For instance, Home Depot advertises a Jeld-Wen 72-inch-by-48-inch vinyl bay window for $1,627. However, it indicates the average cost for a vinyl bay window after accounting for these expenses is between $4,750 and $6,000.
Most direct-to-consumer window providers offer free quotes for windows and installation. We recommend obtaining at least three to compare prices before making a decision.
Editorial note: The name “Homefront” refers to the alliance between USA TODAY and Home Solutions that publishes review, comparison, and informational articles designed to help USA TODAY readers make smarter purchasing and investment decisions about their home. Under the alliance, Homefront provides and publishes research and articles about home service and home improvement topics.
Homefront has an affiliate disclosure policy. The opinions, analyses, reviews or recommendations expressed in this article are those of the Homefront editorial staff alone (see About Homefront). Homefront adheres to strict editorial integrity standards. The information is believed to be accurate as of the publish date, but always check the provider’s website for the most current information.
Today’s window manufacturers prioritize energy efficiency and quality performance. We researched the best window brands in the industry, comparing and scoring them on product selection, features, warranty coverage, cost, customer service and more. The best window brands for your home are Renewal by Andersen, Castle Windows and Harvey Windows + Doors. Renewal by Andersen is…
Your window frame material affects everything from your home’s aesthetic to its energy efficiency. While your window frames should match your home’s overall style, it’s more important for them to align with your budget, climate and maintenance tolerance. The five most common window frames you’ll encounter are vinyl, fiberglass, wood, composite material — such as…
Not all window companies operate the same way. Some are full-service, meaning they make, sell and install their products. Some are only window manufacturers, meaning they don’t do any installation. Full-service companies are the most convenient to work with. You can handle every aspect of your window project with one company, and you won’t have…
Windows come in a variety of shapes and sizes but have one thing in common — they are designed to be resilient against weather changes, pressure and impact. However, things don’t always work as intended, and your window glass may occasionally crack. A sudden shift in temperature, a fly ball from a neighborhood baseball game,…
TEST Our editorial team is committed to creating independent and objective content focused on helping our readers make informed decisions. To help support these efforts we receive compensation from companies that advertise with us.
The compensation we receive from these companies may impact how and where products appear on this site. This compensation does not influence the recommendations or advice our editorial team provides within our content. We do not include all companies, products or offers that may be available.