How to Measure Your Pupillary Distance
Use this step-by-step guide to measure your pupillary distance (PD) by yourself or with the help of a friend.Print PD Ruler
Print PD ruler
Print PD ruler at 100% size.
Do not use ‘scaling’ or ‘fit’ setting.
Print setting should be ‘actual size’.
Preview printable ruler
Mirror or Friend
Stand 8 inches (20 cm) away from a mirror or a friend. Place & hold the PD ruler against your brow. Keep your face straight.
Ready. Set. Measure!
Take a few measurements for consistency.
Most adults have a PD between 54 - 74 mm. Most children have a PD between 43 - 54 mm.
Align to Zero
First, close your right eye and align the ruler’s zero to the center of your left pupil.
Open Right, Close Left
Next, open your right eye and close your left eye.
Look straight ahead and read the millimeter line that matches up with the center of your right pupil. This number represents your single PD in millimeters.
PD Ruler Preview
This is an example of the printable PD Ruler. Ruler measurements are in millimeters.
Note: web view not to scale.