Ring Size Chart

Ring Size Chart

For men, women and children. US Size is also used in Canada and Mexico.

Inside Diameter (Inch)Inside Circumference (Inch)US SizeUK SizeEuro Size
0.4581.4436.50
0.4661.4637.2¼
0.4741.4937.8½
0.4821.5138.5¾
0.491.5439.11
0.4981.5639.7
0.5061.5940.40.5
0.5141.61411
0.5221.6441.721.75
0.531.6742.32.25
0.5381.6942.93
0.5461.7243.63.5
0.5541.7444.234.25
0.5621.7744.84.75
0.571.7945.55.5
0.5781.8246.16
0.5861.8446.846.75
0.5941.8747.47.5
0.6021.89488
0.611.9248.78.75
0.6181.9449.359.25
0.6261.975010
0.6341.9950.610.5
0.6422.0251.211.25
0.652.0451.9611.75
0.6582.0752.512.5
0.6662.0953.113.25
0.6742.1253.813.75
0.6822.1454.4714.5
0.692.1755.115
0.6982.1955.715.75
0.7062.2256.316.25
0.7142.2457817
0.7222.2757.617.5
0.732.2958.318.25
0.7382.3258.919
0.7462.3459.5919.5
0.7542.3760.220.25
0.7622.3960.820.75
0.772.4261.421.5
0.7782.4462.11022
0.7862.4762.710¼22.75
0.7942.4963.410½23.25
0.8022.526410¾24
0.812.5464.61124.75
0.8182.5765.311¼25.25
0.8262.5965.911½26
0.8342.6266.611¾26.5
0.8422.6567.21227.25
0.852.6767.812¼27.75
0.8582.768.512½28.5
0.8662.7269.112¾29
0.8742.7569.71329.75
0.8822.7770.413¼30.5
0.892.87113½31
0.8982.8271.713¾31.75
0.9062.8572.31432.25
0.9142.8772.914¼33
0.9222.973.614½33.5
0.932.9274.214¾34.25
0.9382.9574.81534.75
0.9462.9775.515¼35.5
0.954376.115½36.25
0.9623.0276.815¾36.75
0.973.0577.41637.5

Ring Sizes

Different countries use different scales to measure ring size so it is important to determine the correct ring size according to your country’s standard, or the standard used by your jeweler.

The US for example has the same ring size measurement scale than Canada, but different than UK, Europe and Australia which share the same metrics. Switzerland has its own measurement while Asian also have similar ring size scales.

The inside diameter and inside circumference of the rings are usually measured in millimeters.

US and Canada has a size 3 for the smallest ring size, while UK, Europe and Australis has it in an F size. Both Switzerland and Asian countries have a 4. The US and Canada measurement runs through 3.25, 3.5, 3.75 until 13.5, while UK has an F.5, G, G.5, H until Z1. Swiss rings have it until 28.75, and in Asia, the biggest ring size is a 27.

To easily find your or someone else’s ring size in seconds, be it a surprise or a planned gift, use our easy how-to guide to measure and convert.

Instructions and tips for correctly measuring with or without a ring plus a sizing table and conversion chart.