how sunglasses are measured

When it comes to sunglasses, finding the perfect fit is essential for comfort and style. But have you ever wondered how sunglasses are measured? This comprehensive guide will dive deep into sunglasses measurements, uncovering the secrets behind the numbers and ensuring you make an informed decision when purchasing your next pair of shades.

How Sunglasses Are Measured

Sunglasses are measured using various metrics that determine their fit, size, and dimensions. Understanding these measurements is crucial in finding sunglasses that look great on you and provide adequate protection from the sun’s harmful rays. Let’s explore some of the critical measurements involved:

how sunglasses are measured

Lens Width

The lens width refers to the horizontal measurement of each lens in millimetres. This measurement plays a significant role in determining the overall size and coverage of the sunglasses. It is crucial to find sunglasses with a lens width proportional to your face’s width for a balanced and flattering look.

Bridge Width

The bridge width refers to the distance between the lenses, specifically the area on your nose. This measurement is essential for ensuring a comfortable fit. Sunglasses with a bridge width that is too wide or too narrow can cause discomfort and may not sit properly on your face.

Temple Length

The temple length measures the sunglasses’ arms or “temples.” It represents the distance from the hinge to the end of the temple in millimetres. Finding sunglasses with an appropriate temple length is crucial for a comfortable fit. If the temple length is too short, the sunglasses may squeeze your temples, causing discomfort. On the other hand, if the temple length is too long, the sunglasses may slip off your face.

Lens Height

The lens height measures the vertical distance of each lens. This measurement is essential for those requiring sunglasses that provide ample eye coverage. Sunglasses with taller lens heights protect against sun rays, wind, and dust.

Frame Width

The frame width is the overall horizontal measurement of the sunglasses, including the lenses and frame. It plays a significant role in determining the overall size of the sunglasses and should be proportional to your face shape and size.

Temple Curve

The temple curve refers to the curvature of the temples or arms of the sunglasses. This measurement affects the way the sunglasses fit around your ears. A proper temple curve ensures a comfortable and secure fit, preventing the sunglasses from sliding off your face during various activities.


While not a measurement in the traditional sense, polarization is an essential aspect to consider when choosing sunglasses. Polarized lenses reduce glare and enhance visual clarity, making them ideal for outdoor activities and driving. Look for sunglasses with a polarized coating to experience the full benefits of this technology.

FAQs about How Sunglasses Are Measured

Q: How do I measure my face to find perfectly fitted sunglasses?

Start using a flexible tape measure to measure your face for sunglasses. Measure the distance between your temples and the width of your face from cheekbone to cheekbone. Additionally, measure the length of your face from the hairline to the chin. These measurements will guide you when selecting sunglasses proportionate to your facial dimensions.

Q: Are there standard sizes for sunglasses?

Yes, sunglasses often come in standard sizes corresponding to the earlier measurements. However, it is essential to note that face shapes and sizes vary, and what may be considered a standard size may not be the best fit for everyone. It is always recommended to try on sunglasses before purchasing them to ensure a proper fit.

Q: Can I adjust the fit of my sunglasses?

In some cases, the fit of sunglasses can be adjusted for a more personalized and comfortable experience. Many sunglasses feature adjustable nose pads or temples that can be modified to fit your face shape. Additionally, some opticians offer professional fitting services to ensure the sunglasses sit perfectly on your face.

Q: Do all sunglasses provide UV protection?

No, not all sunglasses provide adequate UV protection. When purchasing sunglasses, looking for those that offer 100% UV protection is essential. This ensures that your eyes are shielded from the harmful effects of the sun’s ultraviolet rays. Always check for the UV protection label or consult a knowledgeable salesperson to make an informed choice.

Q: What are the benefits of wearing sunglasses with proper measurements?

Wearing sunglasses with proper measurements offers several benefits. Firstly, they provide optimal protection from the sun’s UV rays, reducing the risk of eye damage and conditions such as cataracts and macular degeneration. Secondly, well-fitting sunglasses are comfortable, allowing you to enjoy outdoor activities without the hassle of constantly adjusting them. Lastly, adequately measured sunglasses enhance your overall style, complementing your face shape and adding a touch of sophistication to your look.

Q: Can I wear sunglasses with prescription lenses?

Yes, if you require prescription lenses, options are available for you. Many sunglasses can be fitted with prescription lenses, allowing you to simultaneously enjoy vision correction and sun protection. Consult with your optometrist or eyewear professional to explore the prescription sunglasses options suitable for your needs.


Now that you understand how sunglasses are measured, you can confidently embark on your quest to find the perfect pair. By considering the lens width, bridge width, temple length, lens height, frame width, temple curve, and the benefits of polarization, you’ll be well-equipped to choose sunglasses that provide both style and functionality. Remember to measure your face, try different styles, and prioritize UV protection to protect your eyes from harmful rays. You can enter the sun with confidence and flair with the right sunglasses.

Leave a Reply

Your email address will not be published. Required fields are marked *