How to Measure Your Eyeglass Size: Find Your Perfect Fit at MANOOSH.DE
Why Is the Right Glasses Size So Important?
The size of your glasses not only affects your comfort but also your overall appearance. Glasses that are too small press on the temples, while those that are too large tend to slip down the nose. The perfect fit ensures that the optical center of your lenses is positioned exactly in front of your eyes – which is especially important for prescription lenses.
• Optimal wearing comfort:no pressure points, no slipping
• Correct visual performance:the optical center is exactly in front of the eyes
- • Harmonious overall appearance:the glasses fit the width and shape of the face
- • Secure online ordering:you know exactly what size you need
How can you measure glasses size?
Measuring Your Glasses Size – How to Find the Right Frame
Thewidth of the glasses frameplays an important role in wearing comfort. If theglasses frame is too large, the glasses can easily slip off the nose. Atoo small frame can cause pressure on the temples. Therefore, the size of the glasses should match the width of the face.
Measuring the Bridge – How to Find the Right Bridge Width
The bridge of the glasses connects the two lenses and should fit the width of your nose perfectly. The bridge width is measured from the inner edge of one lens to the inner edge of the other lens.
Why is the bridge so important? If the glasses don’t sit properly on your nose, they can slip, causing the optical center of the lenses to be misaligned, which affects visual clarity. A correctly fitted bridge ensures all-day comfort and optimal vision.
Measuring Your Glasses Size – Choosing the Right Lens Width and Height
The lens size directly affects how much you can see. Lenses that are too small limit your field of vision, while larger lenses also cover the peripheral areas. At the same time, the frame should not be wider than your face, and your eyebrows should remain visible above the frame edge.
The optimal viewing point is located in the upper third of the lenses. Additionally, there should be more lens area below the pupil than above, ensuring comfortable vision all day long.
Measuring and Adjusting Temple Length
The temple length is crucial for ensuring the glasses sit securely and comfortably on your ears. It is measured from the hinge to the end of the temple, and this measurement largely determines how securely the glasses fit on your head.
If the temple is too short, the glasses press behind the ears, causing discomfort. If it is too long, the glasses may slip forward. The correct temple length ensures stable fit and all-day comfort.
Depending on the type of glasses and face shape, the temple length can be adjusted to ensure a perfect fit.
Three more ways to determine the right glasses size
Anyone who already wears apair of glasses that fits comfortably can take advantage of its measurements. On the inside of the temple, there are usually three numerical values in millimeters – they provide information about lens width, bridge width, and temple length. With this information, the appropriate size for a new frame can be easily determined.
It is important to note: These three values describe individual parts of the glasses– not the total width of the frame.
Determining the Glasses Width with a Ruler
If you already wear glasses that resemble your desired shape – for example, square – you can use their width as a reference. Simply measure with a ruler along the top edge of the frame from one outer side to the other.
Important: The ideal glasses width can vary slightly, about ±2 mm. Many glasses filters automatically take this tolerance into account, so models within this range will also be displayed. Example: If you wear a square pair of glasses with138 mm width, variants between 136 and 140 mm will also fit comfortably.
Three More Ways to Determine the Right Glasses Size
If you already wear glasses that fit comfortably, you can use their measurements as a guide. On the inside of the temple, there are usually three numbers in millimeters – indicating the lens width, bridge width, and temple length. These values make it easy to determine the right size for a new frame.
It’s important to note that these three numbers refer to individual parts of the glasses, not the total frame width.
Determining the Glasses Width with a Ruler
If you already wear glasses that resemble your desired shape – for example, square – you can use their width as a reference. Simply measure with a ruler along the top edge of the frame from one outer side to the other.
Important: The ideal glasses width can vary slightly, by about ±2 mm. Many glasses filters account for this tolerance, so models within this range are also displayed. For example, if you wear a rectangular pair that is 138 mm wide, variants between 136 and 140 mm will also fit comfortably.
Determining the Glasses Width with a Ruler
If you already wear glasses that resemble your desired shape – for example, square – you can use their width as a reference. Simply measure with a ruler along the top edge of the frame from one outer side to the other.
Important: The ideal glasses width can vary slightly, by about ±2 mm. Many glasses filters account for this tolerance, so models within this range are also displayed. For example, if you wear a rectangular pair that is 138 mm wide, variants between 136 and 140 mm will also fit comfortably.
Determining Your Glasses Size Using a Credit Card
Don’t have a pair of glasses to measure? No problem. With a standard credit card, you can easily estimate which glasses size will fit you.
Here's how to do it:
- Take a standard credit card or bank card.
- Stand in front of a mirror.
- Hold the card vertically against your nose, with the long edge along the center of your nose.
- Check where the top edge of the card ends in comparison to your outer eye corner (where your eye ends on the outside).
The corner extends well beyond your eye → you will likely need smaller glasses
(lens width approx. 47–49 mm)
The corner ends exactly at the outer eye corner → a medium size usually fits best
(lens width approx. 50–52 mm)
The corner ends before the outer corner of the eye → you need larger glasses.
(Lens width from 53 mm)
Frequently Asked Questions about glasses size
Glasses are usually specified by three measurements in millimeters – e.g.52 □ 18 145:
- Lens width(e.g. 52 mm)
- Bridge width(e.g. 18 mm)
- Temple length(e.g. 145 mm)
Depending onlens widthone often distinguishes betweensmall, mediumandlargeglasses sizes.
A "normal" (average) glasses size for adults is often around alens width of about 50–52 mm(usually asMsorted). The exact measurements are often found inside the temple, e.g.52 □ 18 145.
If the glasses press on the temples, they are usually too narrow. If they slide down the nose or seem very wide, they are usually too large.
You can find this information on the inside of the temple as part of a complete size specification, e.g., 52 □ 18 145:
52 = lens width
18 = bridge width
145 = temple length
