What It Measures
The test locates both pupil centers and cheek-edge landmarks, then calculates the interpupillary-distance to face-width ratio.
Interpupillary Distance Test
Discover your interpupillary distance (IPD) with our AI-powered measurement tool. Simply upload a front-facing photo and receive accurate IPD measurements along with your eye spacing ratio in just seconds.
What Is My Interpupillary Distance?
Front-facing photo, face clearly visible
Your marked result appears here
The overlay will show facial landmarks, symmetry pairs, and the centerline.
Analysis failed
Please try again with a clearer front-facing photo.
Example Result of the Facial Symmetry Test
Measured Value
0.0000
Interpupillary distance / face width
In Range
0.4211
0.5338
Optimal 0.4595 - 0.4913
Optimal range
Reference range
This face
Symmetry overlay
How To Read It
The measured ratio is shown against a reference range so you can see whether your eye spacing is close-set, average, or wider-set.
Best Photo
Look straight at the camera with both eyes visible. Avoid strong side angles, heavy shadows, or glasses that hide the pupil centers.
Distribution of Interpupillary Distance
See how this measurement is distributed across the reference sample used for facial analysis.
Understanding Interpupillary Distance
What is IPD?
Interpupillary distance (IPD) is the measurement between the centers of your pupils. This measurement varies from person to person and plays an important role in vision correction, eyewear fitting, and virtual reality headset calibration.
How our tool measures IPD
Our AI analyzes facial landmarks in your photo to precisely locate the center of each pupil. It then calculates the distance between them and compares this to your face width to determine your eye spacing ratio.
Eye Spacing Categories
Eye spacing is typically described as close-set, average, or wide-set based on the ratio of IPD to overall face width.
Close-Set Eyes
Eyes positioned closer to the nose bridge, with a lower IPD-to-face-width ratio.
- Ratio typically below 0.45
- Eyes appear nearer to each other
- Common in many populations
Average Spacing
The most common eye spacing, considered balanced and proportional.
- Ratio between 0.45 and 0.48
- Considered ideal proportion
- Most eyewear fits comfortably
Wide-Set Eyes
Eyes positioned further from the nose bridge with greater spacing.
- Ratio typically above 0.48
- More space between the eyes
- May need adjusted frame sizing
All eye spacing types are normal variations. Your IPD is simply a physical measurement
and does not indicate any positive or negative trait.
Tips for Accurate IPD Measurement
- Look straight at the camera, not at an angle
- Keep your eyes open and visible
- Use good, even lighting on your face
- Remove glasses or sunglasses if possible
How the IPD Measurement Works
1
Upload Photo
Select a clear front-facing photo from your device.
2
AI Analysis
Our AI locates your pupils and measures the distance between them.
3
Get Results
View your IPD measurement and eye spacing ratio instantly.
Why Measure Your Interpupillary Distance?
Knowing your IPD has practical applications beyond curiosity
Eyewear Fitting
Ensure your prescription lenses are centered correctly for optimal vision and comfort when ordering glasses online.
VR Headset Setup
Calibrate your virtual reality headset correctly for a clearer, more comfortable, and immersive VR experience.
Facial Proportions
Understand your facial proportions better. Many people are curious about their unique facial measurements and ratios.
Ready to Measure Your IPD?
Upload a clear, front-facing photo and get your interpupillary distance measurement in seconds. You will also see your eye spacing ratio and learn how it compares to typical proportions.
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Frequently Asked Questions
Interpupillary distance (IPD) is the horizontal distance measured between the centers
of your left and right pupils. Adults typically have an IPD between 54mm and 74mm,
with the average being around 63mm. This measurement is essential for properly fitting
eyeglasses, binoculars, and VR headsets.
Our AI provides a relative measurement based on your photo. While it accurately
calculates the eye spacing ratio, for prescription eyewear or medical purposes,
we recommend getting an official measurement from an optometrist using specialized
equipment.
The eye spacing ratio (ES ratio) compares your interpupillary distance to your
bizygomatic width (face width at the cheekbones). A ratio between 0.45 and 0.48
is considered average or ideal. This ratio helps classify whether eyes are
close-set, average, or wide-set.
Your photo is processed to generate results and then immediately deleted.
We do not store photos, create databases, or share images with third parties.
Your privacy is fully protected.
This tool provides a helpful estimate, but for prescription eyewear, most
opticians recommend a professional measurement. The eye spacing ratio is useful
for understanding your proportions and selecting frame styles that suit your face.
Yes, the interpupillary distance test is completely free with no account required.
Simply upload a photo and receive your results instantly.
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