Ring Size Calculator
Circumference
Unit
Ring sizing is based on finger circumference. US uses a numerical scale; EU sizes equal circumference in mm minus 40; UK uses letters. Measure at end of day when fingers are slightly larger.
References
🔒
100% Gratuit
Sans inscription
✓
Précis
Formules vérifiées
⚡
Instantané
Résultats immédiats
📱
Compatible mobile
Tous les appareils