Frame Sizing Guide

What is My Frame Size?

The secret to ordering a perfectly fitting pair of eyeglasses online is simple: know your frame size.

The eyeglasses and sunglasses frame size uses the same three key measurements:

• Eye Size: the width of the frame around the lens
• Bridge Width: the width of the frame across your nose
• Temple Length: the length of the arm of the glasses from the front of the frame to behind your ear

To help you get the right frame measurement, we’ve created a glasses frame sizing guide. Check it out below.

How to Measure Your Glasses Frame Size

If you have a pair of prescription glasses that fit like a glove, finding the right size for your next pair of frames is simple.

Measure the glasses from endpoint to endpoint (or from the right front tip to the left front tip) with a millimeter ruler. You’ll use this measurement as a guideline when shopping for new eyewear.

If you don’t already own a pair of well-fitting frames, that’s okay, too. You can use a soft measuring tape with millimeter measurements to find the dimensions across your face. Check out the video below for step-by-step instructions on how to measure your features properly.

Sunglasses tend to be larger than eyeglasses, so your sunglasses size will most likely be different than your eyeglasses size, even though they both use the same measurements.

With sunglasses, you have more freedom to choose within a wider range of sizes, since the fit does not need to be as precise.

Generally, glasses will still fit within two to three millimeters of a “perfect fit.” So while the perfect fit is ideal, if your ideal frame is only available in a size that’s within that two to three millimeter range, you may still be able to wear them comfortably.

Find Your Size On Your Current Frames

Every pair of glasses is a little different, so the size information may not always be located in the same place. Look on the inside of your existing glasses frames. You will find the size information stamped either on the temple arm, like this example:

Or on the bridge, like on this metal example:

or like on this plastic nose bridge:

On some models, you may also find the size stamped on the earpiece.

What to Look for When Determining Your Glasses Measurements

There can be quite a few different kinds of numbers and markings inside your frame, and not all of them are relevant to the size.

The eye size and bridge size are often located next to one another, but sometimes they are separated by a square box icon. The temple size may immediately follow those two sets of numbers, or have some other info in between.

You are looking for two two-digit numbers and one three-digit number. Here’s how to identify them:

Eye Size: a two-digit number in the 40 - 62 range

Bridge Size: a two-digit number in the 14 - 24 range

Temple size: a three-digit number in the 120 - 150 range

The eye size is the most important number to pay attention to. Depending on the style of frames you choose, you can go up or down by one and still find a decent fit.

What you can ignore:

Some information isn’t necessary to gather when taking your frame measurements.

A set of capital letters and numbers grouped together is generally the model number or the frame color/style number(s). In the image above, “VPR 020” is the frame model number, while “EAJ-101” is the color/style number. You don’t need these to determine your glasses size.

Still confused? We can help.

Also see: Reading Glasses | How to Measure Pupillary Distance or PD | Lens Color Guide | Understanding Your Prescription