How-To

How to Measure Your Windows and Doors for Replacement

All you need to start the process of getting a quote for window and door replacement is a tape measure, a helper, and our handy tracking form.


August 1, 2022

Do you need a prybar to open your windows? Is your door threshold wobbly and rotten? Does the wind blow your curtains around even when your windows are closed? If you can relate to any of these scenarios, it may be time for new windows and doors.

In the past, buying new windows and doors meant you might have set up meetings with a few different sales reps and invited them into your home to measure and discuss design options and pricing. These days, though, a digital meeting might be a better option to discuss the window replacement process. But where does this leave you when you still need to know the measurements of your windows and doors to get a realistic quote? You can do your own measuring, and it’s really quite simple. Here’s how:

Enlist a Helper
Measuring windows and doors can be a one-person job, but it will go a lot faster with a helper. Have your helper record the measurements as you go in this convenient printable form (Spanish version). To avoid a mistake, after you read the measurements, have them read the numbers back as you double check the dimensions. It’s also handy to have a helper hold one side of the tape measure when measuring larger windows and doors.

How to Measure for Replacement Windows

A man measuring the width of a window for replacement.
You don't need to be an expert or even know the parts of a window to measure your own before embarking on the replacement process. It’s just two easy steps:

1. Measure the Width
From the inside of your home, use a tape measure, and measure the distance from the inner edge of one side jamb to the other. The side jamb is the vertical piece of trim on each side of the window. If your window is finished with drywall instead of jambs, simply measure the distance between the drywall on each side.

2. Measure the Height
Measure the distance between the sill of the window and the head jamb. The sill is the lowest horizontal piece of trim. If your window is finished with drywall at the top instead of a head jamb, simply measure up to the drywall. Round up to the nearest inch and record your measurement.

How to Measure for Replacement Doors

Kitchen with Marvin Windows and Doors with Door Measurement Guide
It’s almost exactly the same for measuring doors for replacement, though the parts of a door are slightly different than those of a window.

1. Measure the Width
From the inside of your home, use a tape measure, and measure the distance from the inner edge of one side jamb to the other.

2. Measure the Height
Measure the distance between the threshold and the head jamb.
Don’t Worry
What if your measurements are not perfect? Don’t worry, if you do decide to choose Marvin for your home improvement project, a friendly and knowledgeable window and door expert will confirm all measurements before ordering your new Marvin windows and doors.

Don’t have a Marvin dealer yet?
Visit our find a dealer tool or call 1-888-537-7828 to find a Marvin dealer near you.

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