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How to Find Your Frame Size | Eyeglasses Sizing & Fit Guide
Finding your perfect frame size is just like checking the size tag on a favorite t-shirt! If you already have a pair of glasses or sunglasses that fit your face comfortably, you can use them to find your ideal measurements and filter our catalog perfectly.
Step 1: Decode your current glasses measurements
Look inside the temple arm (the side piece) of your current frames. You will see three numbers printed there, usually looking something like this: 53 ▢ 15 — 140.
Here is what those numbers mean in millimeters (mm):
First Number (e.g., 53): Lens Width. The horizontal width of one lens.
Second Number (e.g., 15): Bridge Width. The distance between the two lenses across your nose.
Third Number (e.g., 140): Temple Length. The total length of the side arm.
Sizing reference chart
| Sizing Bracket | Lens Width | Bridge Width | Temple Length |
|---|---|---|---|
| Small | 42 - 48 mm | 16 - 17 mm | 130 - 135 mm |
| Medium | 49 - 52 mm | 18 - 19 mm | 136 - 140 mm |
| Large | 53 - 58 mm | 20 - 22 mm | 141 - 150 mm |
Step 2: Use the size filters on our website
Once you know your preferred size or measurements, you can filter our 3,400+ styles down to only the frames that will fit your face flawlessly.
Select a shopping category on our website (such as Prescription Glasses).
Look at the menu bar right above the glasses images and click on the Size filter.
Choose the option that works best for you:
Quick Fit Brackets: Select Narrow, Average, Wide, or Extra Wide to instantly see frames in that general ballpark.
Custom Sliders: Click on Custom to open our precise measurement bars. You can slide the bars to input the exact millimeter dimensions of your Lens Width, Temple Length, and Bridge Width from your current glasses.
Frame Size Finder: If you are still unsure, click the text link at the bottom that says "Not Sure? Find Your Size". This tool will run your numbers and give you an instant recommendation!