Do these numbers look familiar? 47 | 15 | 125 If you’ve ever tried to purchase glasses online, you may have been left wondering what those numbers mean. We’ll help you make sense of them.
Typically, most eyewear manufacturers will print these numbers on the inside of one of the temples. This image shows you what these numbers might look like on a frame.
But, what does each set of numbers represent?
Frame size is determined by the three key measurements, always in millimetres, found on the inside of the frame, typically on the temple. The three measurements are: lens width (from 31-60mm), bridge width (from 12-31mm), and temple length (from 115-155mm).
Lens Width (mm)
47 | 15 | 125
From one end to the other of the lens.
Bridge (mm)
47 | 15 | 125
From one lens to the other.
Temple (mm)
47 | 15 | 125
From the screw to the end of the arm (temple).
Lens Height (mm)
If you wear multifocal prescriptions, such as transition lenses or Rx sunglasses, you may be familiar with a fourth measurement, the Lens Height. The lens height measurement is essential for multifocal prescription lenses; which require a minimum measurement of 28-30mm.
From the top to the bottom of the lens.
What’s next?
Now that you understand frame measurements, you might be wondering, what’s next, how do I purchase my glasses online? Read our helpful articles to learn more.