Glasses Size Guide
The right size makes your glasses comfortable, keeps them from slipping and makes them look the way they should. Here you learn to read the three numbers on the frame, measure your own glasses and compare with the measurements of all our frames, so you find the right size when you buy glasses online.
How do I know what size glasses I need?
Glasses size is given as three measurements in millimeters, for example 52 □ 19 140. The first number is the lens width, the second is the bridge width and the third is the temple length. The easiest way to find your size is to look inside the temple of glasses that fit you well and compare with the measurements of the frame you want. If the lens width and bridge are within a couple of millimeters, the size usually fits. Compare with our frame measurements
What do the numbers on glasses frames mean?
Most frames have the measurements printed inside the temple, often together with the model name and color code. Numbers 1 to 3 are usually on the frame, while 4 and 5 are usually given in the product description.
How do I measure my glasses size?
There are three ways to find your size. The most reliable is to start from a pair of glasses that already fits well.
What size glasses fit my face?
The table shows rough guidelines. Faces differ, so also compare with glasses you already have.
| Size | Lens width | Total width | Usually suits |
|---|---|---|---|
| Small | Under 49 mm | Under 130 mm | Narrow faces and smaller heads |
| Medium | 49–53 mm | 130–140 mm | Most adults |
| Large | 54 mm and up | Over 140 mm | Wider faces and larger heads |
What are the measurements of Corlin frames?
Here are the measurements of all our optical frames, in the same order as in our collection. The same model has the same measurements in every color.
| Model | Lens width | Bridge | Temple length | Total width | Lens height |
|---|---|---|---|---|---|
| Selma | 52 mm | 19 mm | 140 mm | 140 mm | 36 mm |
| Aidan | 52 mm | 19 mm | 140 mm | 139 mm | 37 mm |
| Gelo | 55 mm | 16 mm | 140 mm | 140 mm | 47 mm |
| Todd | 49 mm | 24 mm | 145 mm | 145 mm | 42 mm |
| Louis | 52 mm | 17 mm | 140 mm | 143 mm | 31 mm |
| Romy | 55 mm | 17 mm | 143 mm | 144 mm | 32 mm |
| Celia | 53 mm | 21 mm | 150 mm | 135 mm | 46 mm |
| Will | 53 mm | 24 mm | 145 mm | 145 mm | 42 mm |
| Victoria | 56 mm | 22 mm | 150 mm | 142 mm | 56 mm |
| Kim | 53 mm | 23 mm | 145 mm | 140 mm | 46 mm |
| Jimi | 53 mm | 20 mm | 140 mm | 143 mm | 37 mm |
| Fred | – | 13.5 mm | 140 mm | 143 mm | 38.5 mm |
How should glasses fit?
When the size is right, the glasses sit securely without pressing anywhere. Check these three things when you try them on.
Good to know
If you are unsure about the size, order the frame as a non-prescription Blue Light model first. It can be returned within 30 days, while prescription glasses cannot be returned.
Glasses frames in different sizes
A selection of our optical frames, with lens width, bridge and temple length under each model.
Optical frames
All optical frames
Questions about glasses size
Where do I find the measurements of my glasses?
The measurements are usually inside the temple, sometimes on the bridge. They are shown as three numbers, for example 52 □ 19 140.
What does 52 □ 19 140 mean?
52 is the lens width, 19 is the bridge width and 140 is the temple length, all in millimeters.
What is the most common glasses size?
Most adults have a lens width between about 49 and 53 millimeters and a total width between 130 and 140 millimeters.
How exact do the measurements need to be?
Lens width and bridge should be within about 2 millimeters of glasses that fit well. The temple length can differ by about 5 millimeters.
Can glasses that fit badly be adjusted?
Often yes. An optician can adjust the temples and how the frame sits on your nose, but cannot change the lens width or total width.
Which Corlin frames suit small faces?
Celia has the narrowest total width, 135 millimeters. Selma and Aidan have a 52 millimeter lens width and suit small to medium faces.
Which Corlin frames suit large faces?
Todd and Will have the largest total width, 145 millimeters. Victoria has the largest lenses, 56 millimeters.
Is PD the same as glasses size?
No. PD is the distance between your pupils and is used to center the lenses. Glasses size is about the measurements of the frame.