Home window sizes vary widely based on home style, window design, functionality and materials. Many retailers and manufacturers stock a standard set of window sizes in multiple materials, functional and aesthetic styles. Local building codes often dictate both the number and size of windows that any structure of a given size must have. One way to categorize common or standard window sizes is to group them by their typical placement within specific rooms of the home.
Standard window sizes for typical bathrooms range from 2 feet by 1 foot 6 inches to 2 by 3 feet.
Living room windows are typically larger picture windows or hung in multiples ranging from 3 by 4 feet to 6 by 6 feet. .
Standard bedroom windows typically range from 2 by 3 feet on the smaller to 4 by 5 feet on the larger end of the spectrum.
Dining room windows, as with living room windows, tend to be larger picture windows and hung in multiples in order to create a picturesque effect. They commonly range from 3 by 4 feet to 6 by 5 feet.
Garages and Basements
Garage and basement windows tend to be on the smaller size and rectangular in shape, and they range from 2 feet by 1 foot 6 inches to 3 by 4 feet.