What do the numbers on your glasses mean?

Jamie, co-founder

Last Update 3 years ago

The numbers on your glasses refer to numerous information.


  • Dimensions
  • Frame model
  • Certifications 
  • Branding



What size are my glasses?


This information is usually marked on the inside of either temple (arms.)


Commonly, they're a series of three numbers usually separated by a square, dash or a space. For example;


50 [] 18 145


50 = lens width (mm)

18 = bridge width (mm)

145 = temple length (mm)


Struggling to get the right fit?


At Banton Frameworks, we offer an adjustment service for all our handmade acetate frames.


However, if you're looking for some friendly advice, you might want to head over to our blog via the links below.


Glasses for a big head


Glasses for a big nose

Was this article helpful?

1 out of 1 liked this article

Still need help? Message Us