How to find the measurements of your old frames

Most of the time the frame measurements are engraved on the inside of your eyeglass temples (arm pieces) or behind the nose bridge area.

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For instance, these will be shown as:

The first number represent width of lens

Second represent lens width

Third one is Temple length

Forth is bridge size

Frame Dimensions

Lens Width

Lens width is the horizontal width of the frame’s lens in millimeters. Usually, the eye size ranges from 40 mm to 60 mm

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Lens height

It is the vertical height of an eyeglasses lens which is measured from the tip to the bottom of the lens aperture of the frame. The B measurement is important for bi-focal lenses or progressive lenses.

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Bridge Size

Bridge size is the distance between the two lenses in millimeters and typically ranges from 14 mm to 24 mm.

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Temple length

Temple length is measured along the length of the temple from one end to the other and also includes the bend.
Your temple length can fall between 120 mm and 150 mm.

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In case you already have an eyeglass frame, you can refer to its frame size. These measurements don’t have to be exact but can vary from your existing frame size as follows:

Lens Width: within 2 mm | Bridge size: within 1 mm | Temple size: within 5 mm

Fit Eyeglasses Sunglasses
Small 50mm and below 55mm and below
Medium 51mm–54mm 56mm–64mm
Large 55mm and above 65mm and above

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Face Type

Each individual has different facial features and require different frame measurements. Moreover, frames vary by their shapes and sizes.

Read our Guide on How To Pick Eyeglasses For Your Face Shape to Learn more


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