PUPILLARY DISTANCE GUIDE
Measure Your PD at Home
A quick, accurate way to ensure your prescription lenses are centered for clear, comfortable vision.
How to Measure Your Pupillary Distance (PD)
Choose the method that feels easiest for you. Each takes less than two minutes.
01 — Measure with a mirror
- Stand about 8 inches from a mirror.
- Hold a millimeter ruler across your brow.
- Close your right eye and align the ruler's zero with your left pupil.
- Open your right eye and close your left.
- Read the millimeter number at the center of your right pupil. That number is your PD.
02 — Using your glasses
- Put on your glasses and focus on an object at least 20 feet away.
- Mark a small dot on your right lens over the object.
- Without moving your head, mark the same object on your left lens.
- Remove your glasses and measure the distance between the two dots in millimeters. That number is your PD.
03 — With a friend
- Look straight ahead at a distant object.
- Have someone measure from pupil center to pupil center using a millimeter ruler.
- Record the measurement. That number is your PD.
Most adult PDs range between 54–74mm.
Download a Printable PD Ruler
For the most accurate measurement, print our millimeter PD ruler at 100% scale. A physical ruler removes screen distortion and helps ensure precise results.
- Designed to print at true scale
- Easy step-by-step instructions included
- Works for both distance and reading PD
Important: When printing, select "Actual Size" or 100% scale to ensure accuracy.
Confirm Your PD Measurement
Enter your measured pupillary distance in millimeters to confirm it falls within the typical adult range.
Most adult PDs range between 54–74mm. If unsure, repeat the measurement 2–3 times for accuracy.
Ready to Shop With Confidence?
You now have everything you need to complete your prescription details. With your pupillary distance measured, your lenses can be crafted for precise alignment and optimal clarity.
Explore our prescription-ready frames and enter your PD during lens selection.