Glasses Size Calculator
From Face Width
Determine frame size based on face width
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mm
From Existing Frames
Understand your current frame measurements
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mm
mm
Formula
Frame width ≈ (Lens width × 2) + Bridge width + ~10mm | Frame numbers: Lens-Bridge-Temple (e.g., 52-18-140)
Frequently Asked Questions
Where do I find my glasses frame size?
Look on the inside of the temple arm (the part that goes over your ear). You will see three numbers like 52-18-140. These are: lens width (52mm), bridge width (18mm), and temple length (140mm).
How do I measure my face width for glasses?
Use a ruler or tape measure across the widest part of your face (temple to temple). This measurement helps determine what frame width will look proportional on your face.
What frame shape suits my face?
Oval faces suit most shapes. Round faces look best with angular frames. Square faces pair well with round or oval frames. Heart-shaped faces look great with bottom-heavy frames. Oblong faces benefit from oversized or deep frames.