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Glasses Measurements: How to Find Your Frame Size
Finding the perfect frame size is key to comfortable and stylish eyewear. Whether you’re shopping online or in-store, understanding glasses measurements can help you pick the right fit. Here’s everything you need to know about interpreting and measuring your frame size.
Find Your Perfect Frame Size with Ease
Understanding Frame Measurements
Most glasses have a series of three numbers printed on the inside of one temple arm, separated by spaces, dashes, or a small square. These numbers represent lens width, bridge width, and temple length, measured in millimeters. You might also find additional codes for the model, brand, or color.
Let’s break down these key measurements:
Lens Width (Eye Size)
The first number is the width of each lens in millimeters. This only includes the clear portion of the lens you look through, excluding the frame.
- Typical Range: 40–60 mm
- Importance: Determines how wide the lenses are, impacting both aesthetics and peripheral vision.
Bridge Width
This measures the shortest distance between the two lenses. A smaller bridge width suits narrower noses, while a larger bridge width is better for wider noses.
- Typical Range: 14–24 mm
- Importance: Ensures a snug fit over the bridge of your nose, keeping the glasses from slipping.
Temple Length
This measures the length of each temple (or arm), from the hinge to the ear curve and then to the tip.
- Typical Range: 120–150 mm
- Importance: A correct temple length ensures the arms reach comfortably behind your ears without being too short or sticking out excessively.
Frame Dimensions
How to Measure Glasses Size
If you’re unsure of your frame size, you can measure it yourself or check the numbers on an existing pair of well-fitting glasses. Here’s how:
Frame Width
Measure horizontally across the entire frame, from hinge to hinge. This is the total width of the glasses and ensures the frames don’t sit too tightly or loosely on your face.
Lens Height
Measure vertically at the tallest point of the lens. This is especially important for bifocals or progressive lenses, which typically require a lens height of at least 30 mm.
Bridge Width
Measure the distance between the two lenses at the closest point. For a good fit, stick to a range that is within 2 mm of your current bridge measurement.
Temple Length
Measure in two parts:
- From the hinge to the bend.
- From the bend to the tip.
Add these together for the total length.
Lens Width
Measure horizontally across the widest point of the lens. This will match the first number printed on your frames.
Tips for a Perfect Fit
- Stay within 2–3 mm of your current frame measurements for a comfortable fit.
- If your glasses pinch your nose or slide down, check the bridge width.
- Temple arms that stick out too far or don’t reach behind your ears might indicate an incorrect temple length.
Why Frame Size Matters
The right measurements ensure more than just comfort—they also impact your vision and overall appearance. A proper fit prevents unnecessary pressure points, keeps your glasses securely in place, and enhances your style.
Now that you know how to measure glasses, you’re ready to find frames that look and feel amazing!