Glasses Frame Measurements
Choosing the right frame size is important when buying glasses online. Understanding a few basic measurements can help you find a frame that fits more comfortably.
If you already own a pair of glasses that fits you well, comparing its measurements with the measurements listed on the Rimcoo product page is one of the easiest ways to choose your next frame.
Use a pair of glasses that already fits you comfortably as your reference whenever possible.
Frame Width
Frame width is the total horizontal width of the front of the glasses, including the outer edges of the frame.
A frame that is too narrow may feel tight around the temples, while a frame that is too wide may feel loose or slide out of position.
For a comfortable fit, the frame should generally sit naturally across your face without excessive pressure or large gaps at the sides.
How to measure: Measure horizontally across the widest part of the front of the frame, including any hinges or design details that extend outward.
Lens Width
Lens width is the horizontal width of one lens, measured in millimeters.
As a general reference:
- Small: 50 mm or less
- Medium: 51–54 mm
- Large: 55 mm or more
Lens width can also affect the overall appearance of the frame and the finished thickness of prescription lenses.
Lens Height
Lens height is the vertical measurement of the lens from top to bottom.
Different frame styles can have very different lens heights, even when their lens widths are similar.
Lens height can be especially important when choosing larger frames or certain progressive lens designs.
Bridge Width
Bridge width is the distance between the two lenses and helps determine how the frame sits on your nose.
A bridge that is too wide may cause the glasses to slide down, while a bridge that is too narrow may create pressure around the nose.
How to measure: Measure the distance between the inner edges of the two lenses.
Temple Length
Temple length is the length of the frame arms, measured from the hinge area to the end of the temple.
Common temple lengths include 135 mm, 140 mm, 145 mm, and 150 mm.
The temples should sit comfortably along the sides of your head and behind your ears without feeling too tight or too loose.
How to measure: Measure from the hinge or screw area to the end of the temple arm.
Understanding the Numbers on Your Glasses
Many eyeglass frames have three numbers printed inside the temple arm.
For example:
52 mm = Lens Width
18 mm = Bridge Width
145 mm = Temple Length
These numbers can be a useful starting point when comparing a new frame with glasses you already own.
Which Size Should You Choose?
There is no single frame size that fits everyone.
Your face width, nose shape, prescription, preferred style, and personal comfort can all affect which frame feels best.
If your current glasses fit comfortably, choosing a frame with similar measurements is usually the simplest approach.
Send us the measurements of your current glasses or the frame you're interested in, and we'll help you compare the available sizes.
Need Help?
If you have questions about frame measurements or choosing the right size, please contact us.
Email: service@rimcoo.com