A guide to measuring glasses size

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Shop our new arrivals

Find your perfect fit

Shopping online for glasses is easier when you know your size. Find your perfect fit in two easy steps.

1

Pick your sizing method

2

Compare with size chart

1

Pick your sizing method

To ensure a comfortable fit, start by determining your face width. Choose the method that works best for you! 

Use your current glasses

1

Measure the distance between
the hinges on the inside of your glasses.

2

Use this measurement to compare
with our size chart and find your perfect fit.

REMINDERS

Choosing a frame within ± 4 mm
of this measurement is perfectly fine.

In-store adjustments can be made for
extra comfort once you receive your glasses.

1

Find your perfect fit

Shopping online for glasses is easier when you know your size. Find your perfect fit in two easy steps.

Use your current glasses

1

Measure the distance between the hinges on the inside of your glasses

2

Use this measurement to compare
with our size chart and find your perfect fit.

REMINDERS

.

Choosing a frame within ± 4 mm
of this measurement is perfectly fine.

.

In-store adjustments can be made for
extra comfort once you receive your glasses.

2

Our size chart

Now that you’ve measured your face width, use the chart below to find your BonLook size.

SHOP ALL FRAMES

Other measurements

Besides frame width (measured hinge to hinge), other key sizing numbers are usually printed inside the temple of your glasses. 

You should find three numbers like these (measured in mm):

Three numbers: 47, 18, and 145 on a white background.
A green circle with the number '1' in the center.

Lens width

A green circle with the number '1' in the center.

Bridge width

A green circle with the number '1' in the center.

Temple length

Just select “Help me choose my size” on any product page to compare measurements. 

Give it a (virtual) try!

Simple line drawing of eyeglasses with round lenses and a thin frame.

Select a pair of glasses you love.

Click the "Virtual try on" button

See (and love) how you look!

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Illustration of hands holding a prescription paper with a medical symbol.