Ring Sizing Information At Larson Jewelers, we want to make sure you get your ring size right the first time. That is why we have compiled comprehensive information regarding common sizing issues. If you are wondering about the difference between comfort fit and standard fit, please take a look at our comfort fit explained page. For our customers that wonder what are the diameters or circumferences of a dimensions US ring sizes please take a look at our ring size chart. If you are an international customer and would like to know your US ring size please take a look at our ring size conversion chart, which converts ring sizes from just about any country in the world. If you have any other questions about sizing, please feel free to contact our friendly and knowledgeable staff.