How To Choose Sunglasses Size - Frames Size Guidelines

Looking for a pair of sunglasses that meet your expectation of style can be challenging, but considering its size seems to be a bit harder. Has the question “how to choose sunglasses size?” ever sprung to your mind?

If you still do not know what to do, we are here to help. In this post, we will bring a proper measurement for your reference. Let’s get started with our extremely simple 5-step instruction!

how to choose sunglasses size

Step 1: Using Your Current Sunglasses For Reference (If Available)

If you already have your own sunglasses, we suggest using them for reference. Manufacturers often print the serial numbers on the temples of the eyeglasses to let customers know about the product specification.

For better understanding, we take the series 51–19–144 as an example. So, what does it actually mean?

These measurements demonstrate that:

  • Lens width or eye size of 51 mm: It is the diameter in the horizontal direction of the lens when you measure at the widest point. 
  • Bridge width of 19 mm: It is the shortest distance/gap from one lens to another of the eyeglasses. In other words, the bridge stands on your nose. Commonly, this part often measures between 14 and 24 millimeters.
  • Temple length of 144 mm: It is the arm with the role of keeping the eyeglasses on your face. A temple extends from the screw to the temple tip. And this measurement ranges from 135, 140 to 145 millimeters.
  • Lens height: Unlike the lens width, the lens height is the vertical diameter of the eyeglasses. Different brands design their lenses in various sizes. The standard measurement varies typically between 32 and 38 millimeters.

Step 2: Measuring Your Face

Measuring The Distance Between Your Cheekbone 

With a ruler or a tape measure, you will know how wide the distance between two temples of the eyeglasses should be. The first step is to measure your right cheekbone to the left one. To put it simply, it is the highest position on your cheek. 

Since a straight line can give a correct measurement, we suggest using a ruler rather than a tape measure. Then, to measure it, you can ask someone else for help. Or you can try to do it yourself by standing in front of the mirror and measuring the distance between two cheekbones. 

Measuring Your Jawline

The next part that you need to measure is the jawline or the lowest part of your face. For this measurement, using a tape measure will be a wiser choice.

Your right hand will hold one end of the tape below the right ear. Then, you wrap the tape around your chin and end it below your left ear. And you will get the measurement of your jawline. 

Measuring Your Face Length

We consider this as the easiest part of the process. This measurement helps you determine which type of shape you should or should not choose for your face. Not only that but measuring your face length also enables you to know about the lens height. 

Once again, our recommendation for this measurement is to use a measuring tape to measure the distance from your hairline to the lowest point of your chin. 

Measuring Your Forehead Width

Another simple measurement for you is the forehead width. You only need to measure your hairline’s sides. 

But for those who have no hairline, you can take measurements from one forehead side to another. You should measure from the bone on the outside of your eyebrow to the same bone on the opposite side of your face. The forehead width will help you see which shape your face is.  

Measuring Your Chin Width

In this part, you take a measure of distance between your mouth corners. You can get five measurements, for instance:

  • The distance between your cheekbone: 130 mm.
  • Your jawline: 230 mm.
  • Your face length: 220 mm.
  • Your forehead width: 110 mm.
  • Your chin width: 70 mm.

Next, it is time to draw your face based on the dimensions above, like this:

Step 3: Determining The Frame Size

Our following advice is that you should determine the frame size based on the face size, or in other words, the distance between two temples.

  • The frame size of 49mm is for face size of 115mm
  • The frame size of 52mm is for face size of 127mm
  • The frame size of 54mm is for face size of 130mm
  • The frame size of 55mm is for face size of 135mm
  • The frame size of 57mm is for face size of 140mm
  • The frame size of 58mm is for face size of 146mm
  • The frame size of 61mm is for face size of 152mm

Step 4: Determining The Lenses Size

You can use a rule for these measurements before measuring the lenses horizontally at the widest point.

  • The measurement less than 50mm: Size S
  • The measurement between 51mm to 54mm: Size M
  • The measurement greater than 54mm: Size L 

Step 5: Determining A Suitable Frame Shape

The suitable frame shape depends much on your face shape. For example, if you have an oval face, you can wear sunglasses of almost every form, except for the round and oval ones. The most suitable frame shapes include the rectangle, square, and aviator with this face type. 

The Bottom Line

Until these last lines, you have undoubtedly reached thorough information about the topic - how to choose sunglasses size properly? Do you find it helpful for your shopping decision? 

If you still have any further queries, then do not hesitate to drop us a line. And remember to stay tuned to update more useful articles from us!

Thank you so much for reading!

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