Get your perfect-fitting glasses
Know your PD
before you buy.
Buying eyewear should leave you happy and good-looking. Use our camera-based sizing tool to find frames that fit your unique facial measurements — no ruler, no guesswork.
- ~15s
- to a result
- In browser
- nothing uploaded
- iPhone
- depth-aware accuracy
Pupillary Distance · mm
PD Measurement
Your pupillary distance, measured by camera.
PD — pupillary distance — is the gap between your pupils. It's a crucial measurement for the perfect fit, and it's now easier than ever. Our tool uses the camera on your phone or computer to give you an instant, precise reading. For best results we recommend an iPhone, which uses the depth sensor in its front-facing camera.
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01
Press start
Hit Start measuring below and grant camera access when prompted.
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02
Align your face
Follow the on-screen guide to centre your face inside the oval.
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03
Hold steady
Stay still for a moment while we read your iris geometry.
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04
Get your PD
Receive an instant, precise PD value ready for ordering.
- Face detected
- Face size
- Eyes visible
- Motion steady
- Device load
- Higher confidence when your full face is visible, centered, and close enough.
- Lower confidence when eyes are partially hidden, blurred by motion, or face size is small.
- Device load can also reduce confidence when realtime detection slows down.
Measure your PD
How do you want to measure?
Use your iPhone for the most accurate measurements.
Continue on your computer if that's more convenient.
Scan the QR code with your iPhone
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On your iPhone
Open the camera app.
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Scan this code
Point your camera at the QR code.
How to get your perfect fit
Allow access to your camera and turn up your volume for instructions.
By clicking “I’m ready” you consent to data use as described in our privacy policy.
Grab a card
Grab a standard-sized card from your wallet. A card with a solid color to the edge is best.
Tuck your hair
Tuck your hair behind your ears. Having the sides of your face fully visible gives the most accurate measurements.
- Sit alone in a bright, well-lit room
- Remove glasses and anything covering your eyes
When these instructions fade away, align and center your face in the oval.
Grab your card and press it flat against your forehead, close to your face.
Put on the glasses you want fitted, then center your face in the oval and hold still.
Center your face in the oval, then hold a credit card flat against your forehead so we can calibrate PD in millimeters.
Your measurements
- Left iris radius
- —mm · SRO — mm
- Right iris radius
- —mm · SRO — mm
- PD · card-calibrated
- —mm
- Pupillary Distance
- —mm
- Fitting height · left
- —mm
- Fitting height · right
- —mm
Scale comparison · iris constant vs card
Hold a standard card flat against your forehead so we can calibrate your PD in real millimeters.
