CM to ring size Converter

Easily convert your in CM to ring size for free. Just enter the in the input box below to instantly find your ring size.

Enter a valid size

Ring Size Conversion Table

Measurement (mm)Measurement (cm)US SizeEU SizeUK/AU Size
141.4344F
14.41.43.545G
14.81.5447H
15.21.54.548I
15.61.6550J
161.65.551K
16.451.6652L
16.91.76.553M
17.31.7754N
17.71.87.555O
18.21.8857P
18.61.98.558Q
191.9959R
19.41.99.560S
19.82.01062T
20.22.010.563U
20.62.11164V
212.111.566W
21.42.11267X
21.82.212.568Y
22.22.21369Z
22.62.313.570Z+1
232.31471Z+2
23.42.314.572Z+3

Why Are We Here?

  • No more guessing when it comes to finding the right ring size.
  • Our CM to Ring Size Converter makes it easy to get the perfect fit.
  • Perfect for anyone shopping online, jewelers, or planning a surprise engagement.
  • Just enter the finger circumference in centimeters, and we'll do the rest.
  • Say goodbye to uncertainty and make sure that special ring fits perfectly.
  • Your fingers (and your budget) will love you for it!

How to Use the Converter?

ring size converter
  • Measure Your Finger: Take a strip of paper or a piece of string and wrap it snugly around the base of your finger.
  • Mark the Spot: Use a pen or pencil to mark where the ends of the paper or string meet.
  • Get the Measurement: Lay the strip or string flat and measure the length up to the mark using a ruler.
  • Enter Your Measurement: Input the length into our converter to find your ring size.
  • Check with Your Jeweler: Refer to your ring supplier's size guide to ensure the perfect fit.