How Do You Measure Glasses Frame Size?

Finding the perfect pair of glasses is about more than just style—it’s also about fit. If your glasses are too tight, they may cause discomfort, leave red marks on your nose, or cause headaches. If they are too loose, they may slide down your nose or feel unstable. Whether you're looking for polarized sunglasses, prescription sunglasses, or everyday eyewear, knowing how to measure your glasses frame size ensures comfort, functionality, and optimal vision.

In this guide, we'll walk you through the key measurements of glasses, how to find the right fit, and where to shop in Aurora and Newmarket for frames that suit your needs.

Understanding Glasses Frame Measurements

Glasses frames typically have three main measurements printed on the inside of the arms (temples) or the bridge of the frame. These numbers are usually formatted as 52-18-140, where:

Lens Width (52 mm) – The width of each lens, measured from left to right at its widest point.

Bridge Width (18 mm) – The distance between the two lenses, sitting over your nose.

Temple Length (140 mm) – The length of the arms (temples) from the hinge to the end tip, which wraps around your ear.

Knowing these three numbers helps you choose the perfect pair, especially when shopping online for polarized sunglasses or prescription sunglasses.

Some glasses may also include lens height (important for bifocal or progressive lenses) and frame width, which measures the total horizontal distance across the front of the glasses.

How to Measure Your Glasses Frame Size

If you don’t have an existing pair with size markings or want to measure manually, follow these steps:

1. Measuring Lens Width

Place a ruler across one of the lenses.

Measure from the far left edge to the far right edge in millimeters.

Most lenses range between 40 mm to 60 mm.

2. Measuring Bridge Width

Measure the shortest distance between the two lenses.

This is where the frame sits on your nose.

Bridge widths typically range from 14 mm to 24 mm.

3. Measuring Temple Length

Use a flexible measuring tape to measure from the hinge (where the arms connect to the frame) to the end of the temple tip that curves around your ear.

Most temple lengths range between 120 mm to 150 mm.

4. Measuring Frame Width

Lay your glasses flat on a surface.

Use a ruler to measure the total width across the front, from one end of the frame to the other.

The standard frame width ranges from 120 mm to 150 mm.

Knowing these measurements ensures a better fit when buying glasses online or in-store in Aurora and Newmarket.

How to Choose the Right Glasses for Your Face Shape

Your glasses should complement your facial structure for both comfort and style. Here’s a quick guide:

Round Face → Go for rectangular or square frames for contrast.

Oval Face → Almost any frame shape works well.

Square Face → Try rounded or oval frames to soften angles.

Heart-Shaped Face → Bottom-heavy frames help balance the look.

When shopping for prescription sunglasses or polarized sunglasses, ensure they fit well around your nose and temples for maximum comfort.

How to Ensure a Comfortable Fit

Even if your glasses are the right size, they may still require adjustments. Here are some tips to ensure a comfortable fit:

Check for a Snug Fit – Glasses should rest comfortably on your nose without slipping. If they slide down, you may need a smaller bridge width or adjustable nose pads.

Adjust the Temples – The arms should rest behind your ears without pinching or pressing too hard. If they are too tight, consider getting them adjusted at an optical shop.

Look for Spring Hinges – Some frames come with spring hinges that allow slight flexibility, making them more comfortable for extended wear.

Consider Lightweight Materials – If you wear glasses all day, opt for lightweight materials like titanium or acetate for extra comfort.

Where to Buy Glasses in Aurora & Newmarket

If you're in Aurora or Newmarket, many local optical shops offer professional fittings. Opticians can measure your frame size, recommend styles based on your face shape, and adjust frames for a perfect fit.

Local stores offer a wide selection of polarized sunglasses, prescription sunglasses, and everyday glasses to suit different preferences and budgets.

If you prefer online shopping, use your frame measurements to compare sizes before purchasing. Many retailers offer virtual try-ons, which can be helpful when selecting frames.

Measuring your glasses frame size is essential for comfort and functionality. Whether you’re purchasing prescription sunglasses, polarized sunglasses, or regular eyewear, knowing your lens width, bridge width, and temple length ensures a perfect fit.

For those in Aurora and Newmarket, visiting a local optical store can help you find the right frames with professional guidance. If you’re shopping online, always compare your current measurements to the product specifications to make the best choice.

With the right measurements and frame size, you’ll enjoy comfortable and stylish eyewear that enhances your vision and confidence!