Privacy-First•No Camera Required
Actual SizeRing Size Chart
Step 1: Calibrate Your Screen
For accurate measurements, we need to know your screen's real size
Screen Calibration
For accurate measurements, calibrate your screen using a physical reference object.🔒 Privacy-friendly: No camera needed
Place your card on screen horizontally
Adjust the slider until the outline matches your card exactly
85.6 × 53.98 mm
100%
2
Find Your Ring Size
Match the circle to your ring or measure your finger
Ring Size Finder
Match this circle to your ring or measure your finger
Hide sizes. Proposal tips
Calibrate first for accurate sizing
Screen Not Calibrated
For accurate ring sizing, please calibrate your screen first
SizeUS 6
US 0US 16
US / Canada6
UK / AUL
EU51.5
Diameter16.51 mm
Circumference51.9 mm
Instant Conversion
Ring Size Converter
Convert between US, UK, EU, and Australian ring sizes
Ring Size Converter
Convert between US, UK, EU, Australian, and brand ring sizes
Equivalent Sizes
US / Canada6
UK / AUL
EU51.5
Diameter16.51 mm
Circumference51.9 mm
Brand Conversion
Popular Brand Ring Sizes
Convert ring sizes from top jewelry brands to standard US, UK, and EU sizes
Why Choose Us
Why Use Our Ring Sizer?
The most privacy-friendly and accurate ring sizing tool on the web
Coin Calibration
No credit card needed! Calibrate with common coins like US Quarter, Euro, or Pound for accurate screen sizing.
No Camera Required
Unlike other ring sizers, we never ask for camera access. Your privacy is protected.
Universal Sizing
Support for US, UK, EU, and Australian sizing standards. Convert between any format instantly.
Lightning Fast
Loads instantly on any device. No heavy scripts or slow pages. Built for mobile-first experience.
Works Everywhere
Desktop, tablet, or phone — get accurate measurements on any screen size.
No Data Stored
We don't collect or store any personal data. Your measurements stay on your device.