STYLE & EYEWEAR · PUPILLARY DISTANCE
Measure your Pupillary Distance (PD) online.
Ordering prescription glasses, blue-light frames, or sunglasses online? Upload one clear front-facing photo to measure your Far PD, Near / Reading PD, and Right / Left Monocular PD in millimeters using 478-point iris landmark geometry - plus your recommended lens and bridge width.
- Far PD (distance glasses), Near PD (reading) and Dual Monocular PD (OD / OS)
- Calibrated against horizontal visible iris diameter (HVID) with fine-tune slider
- Recommended eyewear frame sizing (Narrow, Standard Medium or Wide Fit in mm)
- Processed 100% locally in your browser - your photo never leaves your device
Drop a front-facing photo (no glasses)
Look straight into the camera lens from arm's length in even lighting. Processed 100% locally in your browser - your photo never leaves your device.
Email My PD & Eyewear Frame Sizing Spec Sheet
Save your Far PD, Near PD & Dual PD reference guide to your inbox + unlock your first-time member welcome discount on your first full AI report (1 use per account).
WHERE TO NEXT
Match your PD to the right frame shape
Your Pupillary Distance tells you the millimeter size of your frames. Your face shape and eye geometry determine which frame silhouette actually flatters your features.
Now that you have your PD and frame width, find out which frame silhouettes (Wayfarer, Browline, Round, Aviator, Geometric) flatter your exact face shape.
See your eye shape, canthal tilt, lid fold and spacing - plus how frame bridge height sits against your brow line.
One photo, one complete report: six harmony pillars, face shape, eyewear frame prescription, haircut guide, colour season, and AI Style Preview.
FAQ
How does the online Pupillary Distance (PD) tool measure in millimeters without a ruler?
MediaPipe's 478-point FaceLandmarker detects both your pupil centers (landmarks 468 and 473) and the horizontal visible iris diameter (HVID, landmarks 469-471 and 474-476). Because adult human horizontal corneal/iris diameter is anatomically consistent around 11.7 mm (11.5-11.9 mm across populations), the ratio of your interpupillary pixel distance to your iris pixel diameter provides an accurate millimeter estimate. You can also fine-tune the iris reference slider between 11.3 mm and 12.2 mm if you know your eyes run slightly smaller or larger than average.
What is the average adult Pupillary Distance (PD)?
Most adult pupillary distances fall between 54 mm and 74 mm, with the overall adult average sitting around 62-64 mm (roughly 63-65 mm in adult men and 59-62 mm in adult women).
What is the difference between Far PD, Near PD, and Monocular (Dual) PD?
Far PD (distance PD) is the distance between the centers of your pupils when looking straight ahead at a distant target, used for everyday distance and sunglasses frames. Near PD is typically 3 mm narrower than your Far PD because your eyes converge slightly when reading or looking at a laptop. Dual or Monocular PD splits the measurement into Right (OD) and Left (OS) distances from the center of your nasal bridge - useful for high-index or progressive lenses.
Does my photo leave my device?
No. All landmark detection and PD calculations run 100% locally inside your browser using WebAssembly. Your photo is never uploaded to a server.