YOUR SIZE, MADE SIMPLE

Find your fit.

Start with glasses you already love. A few simple measurements help you choose rimless lenses that feel like you.

Eyeglasses and a millimetre ruler for measuring a single lens

BEST PLACE TO START

Measure a pair that fits you well.

Full-rim, half-rim or rimless — your favourite comfortable pair is your best starting point.

Place your glasses face-up on a flat surface. Use a ruler marked in millimetres (mm).
Measure ONE lens horizontally, from its leftmost edge to its rightmost edge. Keep the ruler straight, not diagonally across the lens.
For full-rim glasses, measure the lens itself, inside the rim. Do not include the frame thickness. No need to remove the lens.
Check the other lens, then write down the width in mm. Measure the greatest lens height too if you like the depth of your current glasses.

Example: if one lens is 52 mm wide, use 52 mm as your lens-width reference. Do not add the two lenses together.

One lens. Widest horizontal point.
Illustration only — measure your own glasses with a real millimetre ruler.

Woman comparing rimless glasses using a laptop camera

See the size on your face.

Open Live Try-On, allow camera access if you choose, and face the camera in good light. Choose a lens shape and adjust the size live on your face.

Compare a smaller and larger size. Look for balanced proportions and the lens depth you prefer, then note the selected shape and size.

Use it as a visual guide. Camera angle and calibration can affect the result. Confirm your choice against your physical measurements before ordering.

Explore shapes & Live Try-On ↗

You can also open the Live TRY-ON bubble on this website.

Lens, bridge and temple measurements engraved inside a glasses arm

Check the numbers on the arm.

52□ 18140

Look inside a temple arm for three numbers, such as 52 □ 18 140.

52 = one lens width (mm)
18 = bridge size (mm)
140 = temple length (mm)

The first number gives you a useful lens-width reference. If the marking is missing or worn, use Method 1. Lens shape, bridge and frame design also affect fit, so matching that number alone does not guarantee the same fit.

Straight-on photo of a man wearing glasses to help compare fit

Let us help you compare.

Not sure what you measured? Send us your lens width and height, the numbers inside the temple, and clear photos of your glasses from the front and side.

For measurement photos, place a millimetre ruler beside the lens in the same plane and photograph straight-on. A photo of you wearing the glasses can also help us understand what you like about their fit.

If you do not own glasses, an optician can help you try on a comfortable pair and record its measurements. We can then help you compare frame options.

Get sizing help ↗

YOUR SHAPE. YOUR SIZE. YOUR STYLE.

Before you choose your size

Start with your single-lens width. Keep your lens height handy too.
Check what the builder is asking for. Lens width and overall frame width are different. If it asks for overall width, adjust it until the displayed lens width matches your reference. Do not enter a one-lens number into the overall-width field.
Compare the complete fit. Bridge size and temple length depend on the frame model. Changing lens size does not change those frame measurements.
Check lens height for your chosen shape. Two shapes with the same width can have different heights.

Choose your frame →

A little extra clarity

Is lens width the same as PD?

No. Lens width describes the lens size. PD is the distance between your pupils and is used to position prescription lenses. Keep the two measurements separate.

Will the same lens width look identical in every shape?

No. Height, corners and curves change the appearance. Start with your measured width, then compare the shape and height in the preview.

What if my current glasses do not fit well?

Use a pair that feels comfortable as your reference, even if it is a different frame style. If none of your glasses fit well, ask an optician to help you find a comfortable size or contact us before ordering.