Camera Ring Sizer
A premium, highly-accurate mobile app for determining ring sizes using intelligent visual tracking and display calibration.
Finding your correct ring size for online shopping can be challenging. Camera Ring Sizer eliminates the guesswork by combining a real-time visual tracking system with automated reference coin classification. Using a standard coin reference, it measures dimensions with millimetric precision, automatically compensating for your device's screen parameters.
Real-Time Visual Processing
Automatic background filtering, contour recognition, and precise measurement overlays optimized for varying lighting conditions.
Smart Coin Detection
Intelligent visual identification of reference coins (supporting EUR and CZK denominations) to automatically scale measurements with high stability thresholds.
Automatic Screen Calibration
Translates pixel measurements to physical millimeters by matching your device model's screen specifications, preventing display scaling settings from skewing results.
Interactive Refinement & Guide Modes
Verify screen scaling with on-screen templates, measure physical rings manually with digital calipers, or fine-tune automatically detected boundaries.
How It Works
An intuitive, guided process combines smart camera scaling and image detection to deliver sizing results in seconds.
1. Onboarding Guide
Brief overview explaining placement of the coin alongside the finger as a reference.
2. Select Currency
Choose your reference currency (EUR or CZK) to query exact coin diameter parameters.
3. Live Scanner
Hold the phone flat. The scanner automatically finds the coin reference and fits the sizing circles.
4. Refine Alignment
Review the automatic detection boundaries and manually adjust the sizing overlays to guarantee perfect results.
5. Get Sizing Results
View exact diameter conversion metrics (EU/US/UK systems) and share your sizing snapshot card.