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?

Upload a clear front-facing photo to measure your interpupillary distance and eye spacing ratio using AI facial analysis.

Click to Select a Face Photo

or drag and drop

Analyzing Your Photo...

This may take up to 20 seconds

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What You Will Receive

Interpupillary Distance Measurement Example

IPD measurement in pixels

Get an accurate pixel-based measurement of the distance between your pupils.

Eye spacing ratio

Learn your IPD-to-face-width ratio and how it compares to ideal proportions.

Detailed interpretation

Understand what your eye spacing means with clear explanations and context.

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.

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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