VARAi Inc.

Pupillary Distance Calculator

The most advanced, AI-driven PD measurement solution that delivers highly accurate results without the need for external tools. Our device-agnostic and browser-agnostic technology ensures seamless integration and ease of use—no credit card on your forehead required!

Effortlessly measure pupillary distance while wearing glasses—ideal for customers with high prescriptions who need a crystal-clear visualization of their fit. With AI-powered precision, our technology guarantees the perfect eyewear match for every individual.

VARAi PD calculator

Try our Pupillary
Distance Calculator Today

AI-Enhanced Precision

Our PD Calculator provides precise measurements within <1.5mm accuracy, meeting the standards of lens manufacturers and opticians worldwide. Get:

  • Monocular & Binocular Results: Measures each eye separately and together for the most precise prescription lens fitting.
  • Ocular Height Calculation: Ensures exact vertical alignment for multifocal and progressive lenses.
  • Seamless, Frictionless Experience: No awkward manual measuring methods—just a smooth, automated process.
  • Cross-Device Compatibility: Works flawlessly across all browsers and devices without additional software or apps.

Combine our PD Calculator with our Virtual Try-On for the ultimate eyewear shopping experience!

Industry-Leading Technology

We’ve taken the word “AI-powered” seriously and produced a PD measurement solution that is the only accurate, effortless, and no-place card tool in the market.

  • No Extra Tools Required: Unlike competitors, there’s no need for a credit card or printed reference objects—just your face and a camera to measure up to 4 different eye measurements.
  • Lightning-Fast Results: Instant PD measurements in seconds, with accuracy trusted by opticians and eyewear professionals globally.
  • Superior Calibration: Developed in collaboration with vision experts to ensure precision across various face structures and lighting conditions.

Why Use Our PD Calculator Software for
Your Business?

No matter your business model, our PD calculator helps with confident purchase decisions and reducing errors and returns—making it a must-have for eyewear businesses that want to stay ahead. Also, a precise PD measurement is crucial for accurate prescription lenses.

For Opticians, E-Commerce, Eyewear Brands, Retail Chains, Lens Providers

  • Customers can confidently order prescription lenses online with the correct PD.
  • A seamless, accurate experience enhances trust and drives higher purchase rates.
  • Incorrect PD measurements can lead to lens misalignment and dissatisfied customers.
  • Our precision technology ensures near-zero fitting errors, reducing costly returns.
  • Removes barriers to online prescription eyewear purchases.
  • Easy, intuitive, and requires no external tools or downloads.
  • Helps customers measure PD online before visiting a store, ensuring a frictionless transition between digital and physical retail.
  • Streamlines post-purchase processes for both retailers and consumers.
  • Stand out with a cutting-edge digital tool that competitors still struggle to offer seamlessly.
  • Makes eyewear shopping more inclusive and convenient for all users.

For Sales Agents, Distributors, Manufacturers, Wholesale Suppliers, Eyewear Licensing Companies

  • With accurate PD measurements, customers are more likely to purchase premium lenses like progressives, bifocals, and blue-light filtering options.
  • Reduces frustration from incorrect orders, increasing customer satisfaction.
  • Perfect for direct-to-consumer brands and remote optician consultations.
  • A crucial tool for international buyers who cannot visit a store.
  • Can be seamlessly integrated into eyewear e-commerce platforms and B2B optical ordering systems.
  • Creates a seamless bridge between online browsing and in-store purchasing.
  • Eliminates the need for in-store PD measurements, saving opticians and retailers time and resources.
  • Minimizes incorrect lens alignments that lead to customer dissatisfaction.
  • Simplifies the buying process for returning customers.
  • Reduces the need for repeated in-store visits for measurements.

Enhance Your Optical Experience With
Our Full Suite Of Tools

Need 3D Models? Get According To Your Budget

CAD-Based 3D Models

Transform your CAD drawings into ultra-precise 3D eyewear models with true 1:1 accuracy. Perfect for Virtual Try-On, high-resolution product renders, and 3D viewing, these models replicate exact measurements, materials, and textures—ensuring a flawless digital twin before production even begins.

Photo-Based 3D Models

No CAD? No problem. Our experienced 3D specialists recreate high-fidelity models directly from images using advanced 3D sculpting techniques. These models maintain precise frame geometry, accurate proportions, and lifelike textures that are ideal for brands looking for a scalable, hassle-free 3D eyewear design tool that requires no physical samples for approval.

AI-Generated 3D Models

Leverage AI-driven automation to generate 3D models from just a front and side image. Using deep-learning algorithms, our system reconstructs accurate frame structures and proportions, providing an ultra-fast and budget-friendly solution for brands needing quick, scalable, and realistic 3D assets.

Choose your preferred method and bring your eyewear designs to life in stunning 3D. Want to see a demo?

Track & Analyze Consumer Data Like Never Before

Our PD Calculator is not just a measurement tool—it’s a data intelligence asset that helps eyewear brands, opticians, and retailers optimize their sales and inventory strategies. This data can also support the popular options among new or existing customers without any bulk-buy commitment.

Our Pupillary Distance tool captures key customer attributes to refine your business strategy:

  • Customer Preference Tracking: Gain insights into the most common PD ranges and adjust inventory accordingly.
  • Lens Optimization: Identify customer trends in monocular vs. binocular PD needs to optimize product offerings.
  • Personalized Recommendations: Combine PD data with face shape analysis for tailored eyewear suggestions.


🔹 Why It Matters: This data enables precise inventory management, targeted marketing, and personalized eyewear recommendations, leading to higher sales and customer satisfaction.

Avoid overstocking unpopular styles and missing out on trending designs. VARAi’s PD tool provides valuable data to businesses:

  • Align Frames with PD Data: For example, an optician in New York may discover that round acetate frames work best for customers with a specific PD range, enabling more informed ordering decisions

🔹 Why It Matters: Businesses can reduce unsold inventory, improve turnover, and maximize revenue by aligning stock with actual customer demand.

Stay ahead of the curve with live customer insights:

  • Spot PD Range Preferences: Identify how different PD ranges affect frame style preferences, helping businesses tailor offerings to fit customer needs.
  • Predict Lens & Frame Fit Trends: If customers with specific PD ranges prefer wider frames, brands can adjust designs before the trend peaks.
  • Enhance Personalized Marketing: With PD data, campaigns can be tailored to promote frame styles and lens options that best suit specific customer profiles.

🔹 Why It Matters: Businesses gain a competitive edge by proactively adapting to changing market preferences.

Customer trust and security are our top priorities. VARAi’s PD Calculator technology:

✔ Does not store personal data – All tracking is anonymous and consent-based.

✔ Meets the strictest privacy regulations, including:

  • GDPR (Europe) – EU data protection compliance.
  • CCPA (California, USA) – Protects California-based users.
  • PIPEDA (Canada) – Canadian privacy law compliance.
  • LGPD (Brazil) – Adheres to Brazil’s data protection laws.
  • PDPA (Singapore, Thailand, etc.) – Covers privacy standards across Asia.

🔹 Why It Matters: Businesses can confidently leverage data insights while maintaining consumer trust and regulatory compliance.

VARAi’s data-driven approach benefits every segment of the eyewear industry:

  • For Opticians & Retailers: Optimize in-store stock by aligning with customer-specific PD trends. 
  • For Eyewear Brands: Create collections that match real consumer PD ranges and style preferences. 
  • For E-Commerce Stores: Boost online sales by leveraging PD data for more accurate virtual try-ons and recommendations. 
  • For Sales Agents & B2B: Use PD insights to recommend the best frame fits, improving product relevance and sales.

🔹 Why It Matters: Businesses using VARAi’s VTO gain a first-mover advantage, offering a smarter, more personalized experience for customers.

Our Partners Share Their Experience

Frequently asked questions

The average PD is approximately 64 mm for men and 62 mm for women, but individual measurements can vary significantly. Also, the average PD for adults typically falls between 54 and 74 mm. Another source states that 54-68 mm is an acceptable range. For children, the average PD is between 41 and 58 mm. The most reliable way to determine your PD is to calculate pupillary distance online using a precise PD measurement tool, like VARAi’s.

The technology is powered by proprietary engines that provide seamless integration across platforms. We avail more technology-based techniques like facial recognition, landmark mapping, 3D modeling, and machine learning algorithms for more accurate results

A correct pupillary distance (PD) measurement ensures that your lenses align precisely with your pupils and the optical center of your glasses, optimizing visual clarity and comfort. An inaccurate PD can lead to improper lens positioning, causing blurry vision, headaches, discomfort, and eye strain. 

This misalignment can reduce the effectiveness of prescription lenses, especially for multifocal or progressive lenses. Using an online pupillary distance measurement tool helps ensure proper lens alignment for a comfortable and strain-free visual experience.

Yes, our Pupillary Distance (PD) Tool seamlessly integrates with any existing Virtual Try-On (VTO) solution, including competitor platforms. It ensures accurate PD measurements, enabling precise frame scaling so customers see a true-to-life fit, enhancing confidence, reducing returns, and improving the overall eyewear shopping experience.

Unlike a manual PD ruler, which requires self-measurement and can be prone to errors, an AI-powered PD measurement tool delivers fast, precise, and reliable results—matching the accuracy of an optician’s pupillometer. This measurement only has a difference of +/- 1 mm, which is near perfect to an actual pupilometer’s measurements.