Our Ring Size Calculator makes it simple and accurate to measure ring size online. With just a few tools and measurements, you can determine the ideal fit. This guide explains everything you need to know, from using a ring sizer tool to measuring ring size in cm or mm, and even how to calculate your ring size secretly.

Use our free ring size converter to determine your ring size by circumference or diameter. Please, follow the simple steps below to determine your ring size: Choose your preferred sizing method; Move the slider until the selected object fits between the boxes (to help with proportions)

Check out our 60mm ring selection for the very best in unique or custom, handmade pieces from our rings shops.

Check out our 60mm rings selection for the very best in unique or custom, handmade pieces from our statement rings shops.

QasimLED 1-pair 60MM 60SMD COB RGB LED Halo Ring Angel Eyes Universal For Motorcycle Car Driving Warning Light Fog Light DRL Decorative Light with Cover Bluetooth Mobile APP Control 12V DC

The most complete and #1 source for your ring size conversions. Accurately determine what ring size you are in all international sizing standards.

Use our Ring Size Conversion Chart below to find your ring size in different countries. Need help determining your size without a sizer? Download and print our Ring Size Guide

If you're finding a way to convert the circumference or diameter of a finger in millimeters to its corresponding ring size, then this mm-to-ring size converter is for you. With this calculator, you can find the correct ring size by measuring the length of a string or a strip of paper you can wrap around any of your fingers.

Check out our 60mm metal ring selection for the very best in unique or custom, handmade pieces from our rings shops.