Mandrel : Ring Size Measuring

Mandrel helps you estimate ring size directly from your phone. Use Ring Mode to match a ring’s inner edge on screen, or switch to Finger Mode to align the guides with your finger width. Instantly compare sizes across US, UK, EU, JP, and mm, then check the built-in size chart for a quick reference. Whether you’re shopping for yourself, planning a surprise gift, or checking a resize, Mandrel keeps the process simple. Fine-tune the measurement with easy controls, lock your result when it looks right, and use Focus Mode for a cleaner full-screen view. Features: • Ring Mode for matching a physical ring on screen • Finger Mode for quick finger-width estimation • US, UK, EU, JP, and mm size support • Built-in size chart for easy comparison • Lock and adjust controls for more confident matching • Clean, multilingual experience for everyday use For best results, use Mandrel as an estimate and confirm final sizing with a jeweler.