PD Meter: Pupillary Distance
Measure PD for Glasses Online
About
Easily measure your pupillary distance (PD) at home using your phone's camera and a standard card for scale. Get a quick, repeatable estimate in millimeters to order glasses online accurately. The app guides you through the process for reliable results.
What's New in PD Meter
1.0.19
August 22, 2026
You can now rest the reference card on your forehead or your cheek — whichever lies flat against your face — for a steadier, more accurate measurement. The on-screen guide shows both spots, with clearer tips when the card isn't level with your eyes.
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FAQ
How do I measure my PD with PD Meter?
Hold a standard card under your eyes, look into your phone's front camera, and tap to mark the center of each pupil and the edges of the card. PD Meter then calculates your pupillary distance in millimeters.
What is PD Meter used for?
PD Meter is used to measure your pupillary distance (PD), which is required by online eyewear stores to ensure your lenses are centered correctly in the frames for prescription or blue-light glasses.
Is PD Meter accurate for all prescriptions?
PD Meter provides an estimate that depends on lighting, camera angle, and marker precision. For high prescriptions or progressive lenses, it's recommended to confirm your PD with an optician.
Does PD Meter have ads?
Yes, PD Meter contains advertisements. This allows the app to be offered for free to users.
What devices does PD Meter support?
PD Meter is currently supported on iPhone devices.
How often is PD Meter updated?
The latest version is 1.0.19, and the app was last updated on August 22, 2026. Update frequency may vary based on developer releases.
What is the age rating for PD Meter?
PD Meter has an age rating of 17+, indicating it may contain content suitable for mature users.
Can I average my PD results with PD Meter?
Yes, you can re-measure your PD as many times as you like and average your results within PD Meter to increase confidence in the measurement.
