Frame Sizes
Finding the right frame size is an important part of buying eyewear online. Luckily, it’s also super simple! Below is a helpful guide to understanding glasses measurements and sizes when looking for your next pair of eyeglasses or sunglasses.
From left to right, the numbers tell you the:
- Lens width
- Bridge width
- Temple length
- Lens Height
Sometimes a fourth number will be noted on the arm, and this is your lens height. Keep in mind that all these measurements are in millimeters.
To ensure your frames fit correctly, you must first determine what frame size is best for you. The best place to start is by taking the measurements of a pair that you already wear and feel comfortable in.
You can usually find the measurements on the inside of the temple of your glasses. Some may also refer to this section as the “arm” of your glasses. The frame measurements normally appear as three numbers separated by dashes — for example, 48-19-140. These three numbers reflect the measurements of different parts of the frames.
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Lens Width
This is the horizontal width of each lens, measured at its widest point. Also called eye size, it typically ranges from 40 mm to 60 mm.
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Bridge Width
This is the distance between your two lenses. In short, the bridge width is the space where your frames fit against your nose. The bridge size ranges from 14 mm to 24 mm.
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Temple (Arm) Length
This is the length of the temple from the hinge to the temple tip, including the bended part that sits on your ear. The arm length is typically 120 mm to 150 mm long.
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Lens Height
This is the vertical height of your lenses. The measurement for it is taken at the widest point of the lens within the frame. Lens height is especially important when measuring bifocal or progressive lenses.
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