- Stand in front of a mirror and hold the ruler in line with your temple.
- Measure the distance between your temples in inches.
- Multiply your measured value by 25.4 to convert from inches to millimetres.
What is the most common eyeglass frame size?
Temple length is the measurement in millimeters of the “arms” of the frame. This measurement does not vary as much as the others. 135mm, 140mm, 145mm, and 150mm are the most common options.
What size glasses do I need glasses?
The total width of your glasses (both lens frames + bridge) should correspond as closely as possible to your temple-to-temple measurement. For example, if your temple-to-temple width was 132 millimetres (5.2 in), then you should look for a pair of glasses with a width in the 130–134 millimetres (5.1–5.3 in) range.
What size is considered large glasses?
Small 44-47mm
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Medium 49-52mm
Medium Large 52-54mm
Large 54-56mm
Extra Large 56mm and up