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How To Measure A Window

3 min read

The first rule of any home renovation: measure everything twice! This rule is especially applicable when you’re measuring for a replacement window. Whether you’re replacing a door, a standard window, or a pane for a specialty frame, you’ll want to make sure that you’re accurately recording the size before contacting a repairman or ordering a replacement. To help get you started, here’s a step-by-step guide to measuring your window for replacement.

Standard Window Sizes

To make your life a little easier, you can start by understanding how to read standard window sizes. Believe it or not, there are standard window sizes for bedrooms and bathrooms, as well as a standard height at which they should be installed. Depending on what type of window you need to replace, this information can be crucial.

Two of the most common window types are double-hung and single-hung. Double-hung windows have 2 sashes, one upper and one lower, both of which can be opened. Single-hung windows look the same as double-hung, but the top sash is fixed in place and only the lower one is mobile. Some of the most common sizes for these windows are as follows:

Measuring for Window Glass

The type of window that you are trying to replace is important to know in order to get accurate measurements. The type of glass, the frame, and the pane type can all impact the way you need to measure your window. A single pane glass replacement will, for instance, require you to know exactly what type of glass was in the original pane. If you’re about to start the process of replacing a window, you’ll want to have the following information and take simple steps to measure your window pane correctly.

Types of Window Glass

The most common types of window panes are either single pane or double pane. Single pane glass is exactly what it sounds like- a single pane of glass. Double pane glass is more common in modern homes, as it has space in between two panes of glass which helps insulate buildings. While this doesn’t impact the measuring process, you will need to know which type of glass you have so you can request the right window replacement (once you know the size).

Simple Steps to Measure Window Glass

To measure the actual window that you want to replace, you’ll want to follow these steps:

  1. Start with an accurate measuring tool. A ruler or a yardstick will likely be too rigid to accommodate frames and details around the window. A measuring tape is the best option for accurate measurements.
  2. Measure the entire length and width of the window, including the frame and trim. You’ll want to record your measurements to the nearest 1/16th of an inch.
  3. Measure the width of your window from the left edge to the right edge on the top of the window, the middle of the window, and the base of the window.
  4. Measure the height of your window from the top edge to the bottom edge on the left of the window, the middle of the window, and the right of the window.
  5. Measure the depth of your window from the front edge to the back edge at two points on the right side of the window and one point along the base of the window.
  6. Subtract 1/8 inch from the smallest dimension on the width, the depth, and vertical measurement to allow for expansion and contraction of the frame in different weather conditions.
  7. Measure the elevation of your window from the floor to the bottom edge.

And don’t forget to double check your measurements!

Replacing a Window

To give you a better idea of how windows are measured, you can view the visuals below. Once you’ve established the type of glass in the window, you’ll want to take measurements of the length, width, and depth.

Once you have those measurements, you’ll also want to measure how far the window is from the ground for full accuracy. Once you have these measurements, you’re ready to discuss installation with an expert!

Get in Touch With Window World for a Free Window Consultation

If you’re looking for an expert to help you choose the best windows for your home, contact Window World for a free window consultation. Our team would love to provide you with all the details on how to select the best windows to suit your home’s needs. Contact your local Window World today!