Glasses Measurements & Frame size

Finding the right frame size is a super important part of buying eyewear online. But did you know it's also super simple? We created a helpful guide to make the process quick and easy. Here’s what you need to know when looking for your eyeglasses and sunglasses frame measurements. To ensure your frames fit perfectly, first determine which size frames are best for you. The best place to start is with the eyeglass measurements on a pair you already own. First, search for the three little numbers on the inside of the temple of your glasses. Some may also refer to this section as the "arm" of your glasses. These three numbers are the frame's measurements.

Find the Perfect Frame Size!

Discover which eyeglass frames look best on you by checking out our full collection. If you can't find any numbers or specifications on your old sunglasses or glasses, don't worry. That just means it's time to test your measuring skills. Take a ruler or a tape measure and carefully measure the size of the glasses, following the graphic below. Since too many numbers can get a little confusing, the glasses and sunglasses in Eyeons online shop are labelled S (small), M (medium) or L (large), according to the lens width.



Lens width < 49 mm



Lens width 50-60 mm



Lens width > 60 mm