Standard Dining Room Dimensions
Welcome to our guide to standard window sizes including size charts for popular types and dimensions.
Homes that are 30 to 50 years old are typically fitted with standard window sizes that apply to many types and shapes of windows.
Manufacturers have defined measurements for each kind of window in several sizes. However, whether you're shopping for new home windows or replacement windows makes a tremendous difference when ordering.
A new home build has window openings precisely measured and the windows, generally standard sizes, fit in the rough opening with little to no adjustments.
Whereas replacement windows, even if they're standard sizes, may mean more adjustments need to be made to the existing opening. Knowing what to expect before ordering windows saves a lot of time and money for any homeowner.
This guide contains information about standard window sizes and the many variations you may encounter when purchasing windows. Included at the end, is a section on how to measure windows and a handy list of FAQ's.
What Is A Standard Window Size?
When shopping for windows, it's just as important to know the individual sizes of the windows on your home as the manufacturer's standard window sizes.
However, starting with the standard sizes allows a foundation to perform accurate measurements. Today's window suppliers provide a numeric, replacement window size to help homeowners identify the correct windows. This window sizing process is known as the window size notation.
As an example, a standard single hung window that is 2-feet, 9-inches wide, and 3-feet, 4-inches high would include a size notation of "2934." The window size notation includes four numbers; the first two digits represent the width and the second two digits represent the height.
These notations are the manufacture's measurements with an additional ½ inch less or more to provide room for installation. For example, a "4444" size notation represents a window 44-inches wide and 44-inches tall.
The actual measurement may be 43 ½-inches wide by 44 ½-inches high. The ½-inch provides room for flashing materials and ensures the window opens and closes easily.
Another way a window size is noted is with an actual size of 29.5-inches wide and 35.5-inches high and a common size of 30-inches wide and 36-inches high.
The common size is the standard window size and both these sizes may be found in the windows listed specifications and label. Some manufacturers may use their own size notation numbers so always check with the sales clerk before you buy.
Standard Window Width – The most common window is a double hung window, which slides up and down, found on many homes. The width of these windows includes the standard measurements of 24-inches wide, 28, 32, and 40-inches.
Standard Window Height – The same window's standard height includes 36-inches, 44, 52, 54, and 62-inches. (See more in the window size charts below.)
Below are the standard window sizes for the different types of windows. When measuring for custom windows, it helps to begin with these common sizes.
Double Hung Window Sizes
and
Single Hung Window Sizes
WINDOW TYPE | STANDARD WIDTHS | STANDARD HEIGHTS | SIZE NOTATIONS |
Double Hung Window Standard Sizes and Single Hung Window Standard Sizes (They measure the same for standard sizes) | 24-in 24-in 24-in 24-in 24-in 24-in 24-in 24-in | 36-in 44-in 48-in 52-in 54-in 60-in 62-in 70-in | 2030 2038 2040 2044 2046 2050 2052 2060 |
28-in 28-in 28-in 28-in 28-in 28-in 28-in 28-in | 36-in 44-in 48-in 52-in 54-in 60-in 62-in 70-in | 2430 2438 2440 2444 2446 2450 2452 2460 | |
32-in 32-in 32-in 32-in 32-in 32-in 32-in 32-in | 36-in 44-in 48-in 52-in 54-in 60-in 62-in 70-in | 2830 2838 2840 2844 2846 2850 2852 2860 | |
40-in 40-in 40-in 40-in 40-in 40-in 40-in 40-in | 36-in 44-in 48-in 52-in 54-in 60-in 62-in 70-in | 3430 3438 3440 3444 3446 3450 3452 3460 | |
44-in 44-in 44-in 44-in 44-in 44-in 44-in 44-in | 36-in 44-in 48-in 52-in 54-in 60-in 62-in 70-in | 3830 3838 3840 3844 3846 3850 3852 3860 | |
48-in 48-in 48-in 48-in 48-in 48-in 48-in 48-in | 36-in 44-in 48-in 52-in 54-in 60-in 62-in 70-in | 4030 4038 4040 4044 4046 4050 4052 4060 |
Picture Window Sizes
WINDOW TYPE | STANDARD WIDTHS | STANDARD HEIGHTS | SIZE NOTATIONS |
Picture Window Standard Sizes | 24-in 24-in 24-in 24-in 24-in 24-in 24-in 24-in 24-in | 12-in 18-in 24-in 36-in 48-in 52-in 60-in 72-in 96-in | 2010 2016 2020 2030 2040 2044 2050 2060 2080 |
36-in 36-in 36-in 36-in 36-in 36-in 36-in 36-in 36-in | 12-in 18-in 24-in 36-in 48-in 52-in 60-in 72-in 96-in | 3010 3016 3020 3030 3040 3044 3050 3060 3080 | |
48-in 48-in 48-in 48-in 48-in 48-in 48-in 48-in 48-in | 12-in 18-in 24-in 36-in 48-in 52-in 60-in 72-in 96-in | 4010 4016 4020 4030 4040 4044 4050 4060 4080 | |
60-in 60-in 60-in 60-in 60-in 60-in 60-in 60-in 60-in | 12-in 18-in 24-in 36-in 48-in 52-in 60-in 72-in 96-in | 5010 5016 5020 5030 5040 5044 5050 5060 5080 | |
72-in 72-in 72-in 72-in 72-in 72-in 72-in 72-in 72-in | 12-in 18-in 24-in 36-in 48-in 52-in 60-in 72-in 96-in | 6010 6016 6020 6030 6040 6044 6050 6060 6080 | |
96-in 96-in 96-in 96-in 96-in 96-in 96-in 96-in 96-in | 12-in 18-in 24-in 36-in 48-in 52-in 60-in 72-in 96-in | 8010 8016 8020 8030 8040 8044 8050 8060 8080 |
Single Slider Window Sizes
WINDOW TYPE | STANDARD WIDTHS | STANDARD HEIGHTS | SIZE NOTATIONS |
Single Slider Window Standard Sizes | 36-in 36-in 36-in 36-in | 12-in 14-in 18-in 24-in | 3020 3030 3040 3050 |
48-in 48-in 48-in 48-in | 12-in 14-in 18-in 24-in | 4020 4030 4040 4050 | |
60-in 60-in 60-in 60-in | 12-in 14-in 18-in 24-in | 5020 5030 5040 5050 | |
72-in 72-in 72-in 72-in | 12-in 14-in 18-in 24-in | 6020 6030 6040 6050 | |
84-in 84-in 84-in 84-in | 12-in 14-in 18-in 24-in | 7020 7030 7040 7050 |
Casement Window Standard Sizes
WINDOW TYPE | STANDARD WIDTHS | STANDARD HEIGHTS | SIZE NOTATIONS |
Casement Window Standard Sizes | 12-in 12-in 12-in 12-in 12-in | 12-in 14-in 18-in 24-in 30-in | 1616 1618 1620 1626 1656 |
14-in 14-in 14-in 14-in 14-in | 12-in 14-in 18-in 24-in 30-in | 1816 1818 1820 1826 1656 | |
18-in 18-in 18-in 18-in 18-in | 12-in 14-in 18-in 24-in 30-in | 2016 2018 2020 2026 2056 | |
24-in 24-in 24-in 24-in 24-in | 12-in 14-in 18-in 24-in 30-in | 2616 2618 2620 2626 2656 | |
30-in 30-in 30-in 30-in 30-in | 12-in 14-in 18-in 24-in 30-in | 3016 3018 3020 3026 3056 |
Bay Window Sizes
The size of the window opening determines how a bay or bow window is configured. Bay and bow windows can be made from casement windows, double hung, and fixed windows. Fixed windows are typically used when the window is just for appearances.
A bay window or bow window that opens is preferred in living rooms, kitchens, and bedrooms for air circulation. Bay and bow windows are sized according to the existing rough opening and made with several sashes.
The difference in standard sizes for bay and bow windows are based on the angle of the windows and size of the three sashes. Typically, the middle sash is ½ the total width of the window and the two side sashes are ¼ the window width.
WINDOW TYPE | TYPE & ANGLE | STANDARD SIZES Middle Window width | Projection from Outside Wall | |
Bay Window Standard Sizes and Projection from Wall | 30-Degree 3-sash Bay | 36-in | 18-in | 10 -in |
48-in | 20-in | 11 7/8-in | ||
60-in | 24-in | 13 1/8-in | ||
72-in | 30-in | 16 7/8-in | ||
45-Degree 3-sash Bay | 36-in | 18-in | 15 3/8-in | |
48-in | 20-in | 16 3/4-in | ||
60-in | 24-in | 19 5/8-in | ||
72-in | 30-in | 23 7/8-in |
Awning Window Sizes
WINDOW TYPE | STANDARD WIDTHS | STANDARD HEIGHTS | SIZE NOTATIONS |
Awning Window Standard Sizes | 12-in | 12-in | 1616 |
14-in 14-in | 12-in 14-in | 1816 1818 | |
18-in 18-in 18-in | 12-in 14-in 18-in | 2016 2018 2020 | |
24-in 24-in 24-in 24-in | 12-in 14-in 18-in 24-in | 2616 2618 2620 2626 | |
30-in 30-in 30-in 30-in | 12-in 14-in 18-in 24-in | 3016 3018 3020 3026 |
Standard Bedroom Window Sizes
Standard bedroom windows sizes are larger than years ago to allow more light and fresh air in the room. There are standard sizes found in new home builds and existing homes.
Below are the sizes and include either single hung windows or double hung windows, the most common types used in bedrooms. Other types of bedroom windows include sliders.
WINDOW TYPE | STANDARD WIDTHS | STANDARD HEIGHTS |
Bedroom window Sizes | 24-in | 36-in |
24-in | 46-in | |
28-in | 54-in | |
28-in | 66-in | |
28-in | 70-in | |
34-in | 46-in | |
34-in | 62-in |
Bathroom Window Sizes
There aren't any tried and true standard bathroom window sizes besides the standard single hung and double hung windows whose size depends on the location and size of the bathroom.
As a general rule standard bathroom picture windows range from 24″ to 96″ wide and 12″ to 96″ high. A standard bathroom sliding window ranges from 36″ to 84″ wide and from 24″ to 60″ high.
Many bathroom windows are associated with privacy meaning small sizes. However, depending on the size of the bathroom, location of the window, and type of window, bathroom window sizes vary. Bathrooms present much less working space than other rooms in a home.
When possible, the largest size window should be chosen for a bathroom to allow more natural light and air flow. If a bathroom is on a second or third floor and is out of view from onlookers or neighbor's windows, a large bay or bow window is a great choice.
Many homes use glass block windows or frosted glass above a jet tub or in a shower providing extra privacy. Typical bathroom windows include single hung and double hung windows.
A great design element in a bathroom is adding several windows such as a horizontal block of transom windows or two single hung windows side-by-side with wall space in between.
Short, wide casement windows are great to add to the upper part of a shower when privacy is needed and a short, wide slider works as well.
Window Sizes Frequently Asked Questions
Should I replace all my windows at once or can I replace a few at a time?
It may save money up front to replace a few windows but it will cost more if the entire house needs windows replaced.
Buying all the windows in one order provides seller discounts and the cost of labor to install the windows is lower when the whole house is done in one job.
In order for the window installers to be at your home, bring the required equipment, and manage work schedules, one complete job costs less.
What season is the best to have replacement windows installed?
Warm weather is always preferred for replacement installation. Once the existing windows are removed, cold and inclement weather poses troubles. If the weather is too hot, such as summers in the high deserts of Arizona, the intense heat will infiltrate your home.
Any extreme temperatures may cause caulking for sealing the windows to not perform well leading to possible air leakage later.
Vinyl and aluminum windows, if exposed to extreme heat or cold, will expand. This may cause gaps between the rough opening and window frame after the temperatures return to a moderate level.
Can I install my replacement windows myself?
If you're a licensed contractor and have plenty of experience, the answer is yes. If you're a DIY homeowner, it's not recommended.
Are Replacement Windows The Same Size As New Construction Windows?
Replacement windows present some challenges new construction windows do not. New home builds mean precut window openings, professional builders, and proper fitting.
Replacement windows involve precise window measurements with the possibility of adjustments once the windows are purchased. The rough opening for new windows includes nailing fins when the window is installed.
Replacement windows, although water tight, do not require or include nailing fins possibly allowing some water infiltration.
Always use replacement windows for existing homes. Once a window is taken out, other elements that are affected include the wall, trim, and siding causing a new construction window to not fit properly.
Replacement windows slide into the existing window space and typically only require some trim adjustments. This ensures a better fit. We've written an article about replacement vs new construction windows here.
How To Measure For Replacement Windows
On the Energy.gov website, the result of improperly fitting windows causing air leaks leads to a large amount of energy loss.
"Heat gain and heat loss through windows are responsible for 25%–30% of residential heating and cooling energy use." (Source: Energy.gov)
Purchasing the right size windows means preventing energy loss and reduces monthly heating and cooling costs.
Measuring for replacement windows isn't as difficult as it may sound but if measurements are wrong, it will cost a high price when the windows you ordered don't fit. If the company you're purchasing the windows from offers free measurement services, let them do the measuring.
If you have to measure yourself, below are the steps to measure for replacement windows.
- Check that the windows are square by holding a tape measure on the inside of the window in the top right corner. Pull the tape measure down to the bottom left corner and write down the measurement.Reverse this and measure from the top left to the bottom right. The window is square of the two measurements match or are within ¼-inch of each other. If not square, the frame will need to be adjusted.
- Measure the width, not including the window trim, by placing the measuring tape on the left side inside jam and stretching it to the inside of the jam on the right side.Do this for three different spots on the window, middle and near the top and bottom, and use the largest number for the width.
- To measure a window's height, extend the tape measure from the sill to the top of the window opening. Do not measure from the trim board. The sill is where the window sash sits when closed.Do this measurement from the middle of the sill, the right, and the left sides. Take the largest number and this is the height of the window.
Always double-check your measurements and if possible, have someone else check them and compare the results.
Standard Dining Room Dimensions
Source: https://designingidea.com/standard-window-sizes/
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