The Measurement of Glasses

Measuring a pair of eyeglass frames is easy! Already have glasses that fit you? Then just read the measurements on the frame. If not, use a ruler to note down their measurements - the measurements on the lenses and on the frame. In just a few minutes, you can find the perfect size for your face shape.

Why Measure the Frame?

When it comes to the perfect size for your glasses, you'll want to measure them precisely. An eye care specialist will meticulously measure the lenses, nose bridge and temples of your frames so they fit snugly against your face!

Always make sure your glasses fit you or your child comfortably. If they're too tight, it can be uncomfortable and cause kids to take them off, and if they're too loose, the glasses can easily slip off. Your glasses should always fit snug and comfortable!

Your temples should be long enough to reach and wrap around your ears. Also, the bridge of the nose should fit snugly against your nose while leaving some space between them - adjustable nose pads might come in handy if they're too tight. You can be sure your glasses are securely in place and won't slip out!

Knowing the dimensions of your face, and how the frame numbers of eyeglasses correspond to them, makes it easier to choose the perfect pair.

How to Measure the Frame

Ensuring that your glasses fit perfectly is essential, and the best way to ensure this is to first determine the frame size that is right for you.

NO.1 Read the 3 numbers

First, look for three small numbers on the inside part of the glasses (the long, curved part that fits behind both ears) - sometimes called "arms" - find the three-digit code printed on either temple arm. The numbers will appear in the following order: "55-55-145" - These numbers represent the size of your glasses in millimeters. Take a look at a pair you already own and use that number as an example!

From left to right, the following eyewear measurements should be observed in this order:

• 1. Lens width：The horizontal width of a lens is measured at its widest point and is usually between 40mm and 60mm.
• 2. Bridge width：Bridge width is the key to the success of your glasses. This distance is between the two lenses and is related to how well the frame fits on the nose - anywhere from 14mm to 24mm.
• 3. Temple length：Measuring from the screw to its temple tip, including any ear-worn bends, this temple is usually between 120mm and 150mm in length.

NO.2 Measure the glasses lenses

When measuring the width of a lens, place the "0" of the ruler on the edge of a piece of glass and measure the other side horizontally. Make sure not to include any metal or plastic around the lenses; they're just slightly raised pieces of glass!

For the ideal look, make sure your eyes are centered in the lens. Frames that are too wide will give you a crowded look, while frames with a more limited width will make your eyes look farther away.

• Most eyeglasses have a lens width between 35-60mm (1.4-2.4 inches). Although the lenses are curved, you don't need to include the extra length when measuring them.

NO.3 Calculate the vertical lens height

After measuring the width of your lenses, rotate your ruler 90° to determine its height. Line up one end of the ruler with the bottommost edge of each lens before taking a measurement all the way to the highest point. Don't forget that if you're dealing with round lenses, it's important to measure from pole-to-pole along their curves!

• Generally, lens height measurements span from 21–45 millimetres (0.83–1.77 in). Still, if you desire to acquire bifocal or progressive lenses, your lens height must be at least 30 millimetres (1.2 in).

How to Find the Frame Dimensions

If you already know the specific glasses value, let's take a look at their specific measurement method.

NO.1 Measure the width of the frame

One of the most critical factors when finding the best pair of glasses for you is choosing the right frame width. If your frames are too narrow, they can make your face appear wider than you want, while wide-rimmed glasses can make your face appear narrower. So how do you know if the frame you choose is the right one? Make sure that the distance between each temple and the side of the face is no more than a finger's width. Anything larger indicates that they are too big for comfort!

With your ruler in hand, measure the horizontal distance between the most distant points of your glasses. In general, this will be equal to that between the outer edges of both hinges found on each corner at the top section of the frames.

• Frame widths usually measure between 110 to 150 millimetres (or 4.3 to 5.9 inches).

NO.2 Take the measurement of the bridge

For a comfortable fit, the nose bridge width of the frame should fit snugly around your nose. This number is determined by measuring the distance between the two lenses. Choose a lower measurement if you have closer eyes or prefer narrower frames. Conversely, if you have wider eyes and want to try a wider frame, go for a taller size!

Bridge distances are easy to calculate. This span can be precisely measured by simply measuring from where one frame meets the other. With accurate calculations, you'll have everything you need to guarantee a comfortable and stylish frame!

• When choosing a new pair of eyeglasses, it is imperative to measure the bridge width precisely to within 2 mm (0.079 in). Remember, if this measurement is incorrect, your glasses will not fit properly on your face! In practice, the standard range for such measurements is usually between 5-25 mm (0.20-0.98 in).

NO.3 Calculate the length of the temple arms

Measuring your temple arms can be a little tricky as they are at about a 50° angle from each ear. To do this, align the 0 mark of the ruler with a hinge, and keep counting until you reach its tip. Remember to tilt your ruler accordingly as you reach the crook of your arm. Once you're done, make sure it's just level across your face, wrapping around your ears - this should make you feel most comfortable!

If you find it too difficult to measure in one go, try this: Measure from both ends to the center of the elbow—one from its hinge to the center of the bend, the other from its end of the arm to the center of the bend. Once you have these two numbers, combine them for full measure. This technique should make it easier to accurately measure arm flexion!

• The length of the temple arms depends on your eyeglass size and ranges from 118 to 150mm ( 4.6-5.9 in).

Conclusion

Measuring eyeglass frames is an important step in finding the perfect pair of glasses. With this guide in hand, you should now have all the information and tools you need to measure your own frames accurately and easily. Remember, getting your measurements right can save you time, money, and hassle when shopping for new eyewear. So take some time to follow these steps carefully - your future self will thank you! If you're still not sure how to measure eyeglass frames correctly, don't hesitate to seek help from an optician or eye care professional who can provide expert advice.

In our company, we specialize in providing custom eyewear that is tailored to each client's exact specifications and needs. We use advanced technology and cutting-edge design software to create lenses accurate to the millimeter, ensuring a perfect fit and incredible comfort.

We know that wearing glasses can become an integral part of one's lifestyle. Choose our company and create the most suitable pair of glasses for yourself! If interested, please contact us at info@eyefiy.com.