Finding Your Perfect Frame
Finding the right frame size is important when buying glasses online. Learn more about frame measurements and how to measure your old frame below.
Understanding Frame Measurements
You can usually find the most important measurements on the inside arm of your glasses. These will look something like:
From left to right, the numbers tell you the:
Lens Width / Lens Diameter: This is measured across the lens from the bridge at its widest point.
Bridge Width: This is the distance between your two lenses. Essentially the length of the frame that sits directly above your nose.
Arm Length / Temple Length: This is the length of the arm from the hinge to the tip, including the bet part that sits on your ear.
There are also two other measurements that can be useful to know but aren't usually on the frame:
Frame Width: Measure the total width of the full-frame to give you an overall better picture of how these frames compare to your current glasses.
Lens Height / Depth: Measurement from the top to the bottom of the lens. All frames can be fitted with single-vision lenses. However, if you require a bifocal or varifocal lens, then this measurement becomes important, as these lenses will require a minimum lens height of 28mm.
Choosing Your New Frames
If you already own a pair of glasses that you are happy with, the process of choosing the right frame for you is very simple. By checking the frame sizes from your own pair against the sizes indicated on our site, you will be able to find a pair of glasses that fit comfortably, no matter their style!
We show the dimensions on all our frames (example below). Simply measure a frame you have at home and if your frame is within 5mm of the size of the frame on our site, you can safely say it will fit.
How Do I Measure My Frames? - Video
Finding the Best Fit FAQs
How do I know my frame size?
Frame size consists of three key measurements: lens width, bridge width, and arm length. These are typically printed inside the temple arm of your current glasses. For example, 54-19-142 indicates a lens width of 54mm, a bridge width of 19mm, and an arm length of 142mm. You can use these to compare when choosing new frames.
How do I choose glasses for my face shape?
Face shape plays a role in choosing frames that suit:
- Round faces: Angular shapes like square or rectangular frames.
- Oval faces: Most frame styles suit oval shapes, including round or square designs.
- Square faces: Rounded or oval frames soften angular features.
Read our face shape guide for more detailed information on different face shapes.
What if my frame size isn’t available?
When your exact measurements aren’t available, choose a frame from us that’s within 5mm of your current pair. Adjustable nose pads or spring hinges can help fine-tune the fit.
What does “small,” “medium,” or “large” mean in frame sizes?
These refer to the total width of the frame:
- Small: Less than 125mm
- Medium: 126-130mm
- Large: 131-135mm
- Extra-large: More than 136mm
How do I ensure sunglasses fit properly?
For sunglasses, comfort is key. The frame size should be slightly larger than your regular glasses for better coverage.
What should I do if my glasses don’t fit right?
If the frames feel loose, too tight, or don’t align properly, adjustments can often be made at home or by a local optician. Most glasses can be adjusted at the bridge or temple tips for a more comfortable fit.
How do I adjust my glasses for a perfect fit at home?
You can make minor adjustments to your glasses for the following:
- Temple arms: Gently bend the temple tips inward for a snugger fit or outward if they’re too tight.
- Nose pads: Adjust with your fingers or a small tool to raise or lower the frames on your nose. Use minimal pressure at all times to prevent breaking the frames.
