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RingSizeConvert.com

Ring Size Chart in Centimeters (cm)

The full conversion chart with every measurement shown in centimeters, for anyone measuring with a cm tape or ruler.

Measuring in centimeters

Most sewing tape measures and rulers outside the US show centimeters, not millimeters.

If you wrapped a fabric tape measure around your finger, or measured a ring against a ruler marked in cm, this chart lets you match that reading directly without converting to millimeters yourself first.

Full ring size chart (cm)

Ring size conversion chart in centimeters
US / CanadaUS, CA, MXUK / AustraliaUK, IE, AU, NZ, ZAEUEU, FR, AT, BE, DK, SE, NO, FIGermany / NetherlandsDE, NLJapanJP, CN, KR, HK, SGIndia (Bluestone)India (Jewelove)India (VowJewels)India (The Vedic Crystals)Diameter (cm)Circumference (cm)
US / CanadaUS, CA, MX3UK / AustraliaUK, IE, AU, NZ, ZAFEUEU, FR, AT, BE, DK, SE, NO, FI44Germany / NetherlandsDE, NL14JapanJP, CN, KR, HK, SG4India (Bluestone)4.2India (Jewelove)4.2India (VowJewels)4India (The Vedic Crystals)5Diameter (cm)1.41Circumference (cm)4.42
US / CanadaUS, CA, MX3.5UK / AustraliaUK, IE, AU, NZ, ZAGEUEU, FR, AT, BE, DK, SE, NO, FI45.5Germany / NetherlandsDE, NL14.5JapanJP, CN, KR, HK, SG6India (Bluestone)5.49India (Jewelove)5.49India (VowJewels)5India (The Vedic Crystals)6Diameter (cm)1.45Circumference (cm)4.55
US / CanadaUS, CA, MX4UK / AustraliaUK, IE, AU, NZ, ZAHEUEU, FR, AT, BE, DK, SE, NO, FI47Germany / NetherlandsDE, NL15JapanJP, CN, KR, HK, SG7India (Bluestone)6.75India (Jewelove)6.75India (VowJewels)6India (The Vedic Crystals)7Diameter (cm)1.49Circumference (cm)4.67
US / CanadaUS, CA, MX4.5UK / AustraliaUK, IE, AU, NZ, ZAIEUEU, FR, AT, BE, DK, SE, NO, FI48Germany / NetherlandsDE, NL15.5JapanJP, CN, KR, HK, SG8India (Bluestone)8.03India (Jewelove)8.03India (VowJewels)7India (The Vedic Crystals)8Diameter (cm)1.53Circumference (cm)4.80
US / CanadaUS, CA, MX5UK / AustraliaUK, IE, AU, NZ, ZAJ½EUEU, FR, AT, BE, DK, SE, NO, FI49.5Germany / NetherlandsDE, NL15.5JapanJP, CN, KR, HK, SG9India (Bluestone)9.32India (Jewelove)9.32India (VowJewels)8India (The Vedic Crystals)9Diameter (cm)1.57Circumference (cm)4.93
US / CanadaUS, CA, MX5.5UK / AustraliaUK, IE, AU, NZ, ZAK½EUEU, FR, AT, BE, DK, SE, NO, FI50.5Germany / NetherlandsDE, NL16JapanJP, CN, KR, HK, SG10India (Bluestone)10.58India (Jewelove)10.58India (VowJewels)9India (The Vedic Crystals)10Diameter (cm)1.61Circumference (cm)5.06
US / CanadaUS, CA, MX6UK / AustraliaUK, IE, AU, NZ, ZAL½EUEU, FR, AT, BE, DK, SE, NO, FI52Germany / NetherlandsDE, NL16.5JapanJP, CN, KR, HK, SG11India (Bluestone)11.87India (Jewelove)11.87India (VowJewels)10India (The Vedic Crystals)11Diameter (cm)1.65Circumference (cm)5.19
US / CanadaUS, CA, MX6.5UK / AustraliaUK, IE, AU, NZ, ZAM½EUEU, FR, AT, BE, DK, SE, NO, FI53Germany / NetherlandsDE, NL17JapanJP, CN, KR, HK, SG13India (Bluestone)13.16India (Jewelove)13.16India (VowJewels)11India (The Vedic Crystals)12Diameter (cm)1.69Circumference (cm)5.32
US / CanadaUS, CA, MX7UK / AustraliaUK, IE, AU, NZ, ZAN½EUEU, FR, AT, BE, DK, SE, NO, FI54.5Germany / NetherlandsDE, NL17.5JapanJP, CN, KR, HK, SG14India (Bluestone)14.41India (Jewelove)14.41India (VowJewels)12India (The Vedic Crystals)13Diameter (cm)1.73Circumference (cm)5.44
US / CanadaUS, CA, MX7.5UK / AustraliaUK, IE, AU, NZ, ZAO½EUEU, FR, AT, BE, DK, SE, NO, FI55.5Germany / NetherlandsDE, NL17.5JapanJP, CN, KR, HK, SG15India (Bluestone)15.7India (Jewelove)15.7India (VowJewels)13India (The Vedic Crystals)14Diameter (cm)1.77Circumference (cm)5.57
US / CanadaUS, CA, MX8UK / AustraliaUK, IE, AU, NZ, ZAP½EUEU, FR, AT, BE, DK, SE, NO, FI57Germany / NetherlandsDE, NL18JapanJP, CN, KR, HK, SG16India (Bluestone)16.99India (Jewelove)16.99India (VowJewels)14India (The Vedic Crystals)15Diameter (cm)1.81Circumference (cm)5.70
US / CanadaUS, CA, MX8.5UK / AustraliaUK, IE, AU, NZ, ZAQ¼EUEU, FR, AT, BE, DK, SE, NO, FI58.5Germany / NetherlandsDE, NL18.5JapanJP, CN, KR, HK, SG17India (Bluestone)18.25India (Jewelove)18.25India (VowJewels)15India (The Vedic Crystals)16Diameter (cm)1.85Circumference (cm)5.83
US / CanadaUS, CA, MX9UK / AustraliaUK, IE, AU, NZ, ZAR½EUEU, FR, AT, BE, DK, SE, NO, FI59.5Germany / NetherlandsDE, NL19JapanJP, CN, KR, HK, SG18India (Bluestone)19.53India (Jewelove)19.53India (VowJewels)16India (The Vedic Crystals)17Diameter (cm)1.90Circumference (cm)5.95
US / CanadaUS, CA, MX9.5UK / AustraliaUK, IE, AU, NZ, ZAS½EUEU, FR, AT, BE, DK, SE, NO, FI61Germany / NetherlandsDE, NL19.5JapanJP, CN, KR, HK, SG19India (Bluestone)20.79India (Jewelove)20.79India (VowJewels)17India (The Vedic Crystals)18Diameter (cm)1.94Circumference (cm)6.08
US / CanadaUS, CA, MX10UK / AustraliaUK, IE, AU, NZ, ZAT½EUEU, FR, AT, BE, DK, SE, NO, FI62Germany / NetherlandsDE, NL20JapanJP, CN, KR, HK, SG20India (Bluestone)22.08India (Jewelove)22.08India (VowJewels)18India (The Vedic Crystals)19Diameter (cm)1.98Circumference (cm)6.21
US / CanadaUS, CA, MX10.5UK / AustraliaUK, IE, AU, NZ, ZAU½EUEU, FR, AT, BE, DK, SE, NO, FI63.5Germany / NetherlandsDE, NL20JapanJP, CN, KR, HK, SG22India (Bluestone)23.37India (Jewelove)23.37India (VowJewels)19India (The Vedic Crystals)20Diameter (cm)2.02Circumference (cm)6.34
US / CanadaUS, CA, MX11UK / AustraliaUK, IE, AU, NZ, ZAV½EUEU, FR, AT, BE, DK, SE, NO, FI64.5Germany / NetherlandsDE, NL20.5JapanJP, CN, KR, HK, SG23India (Bluestone)24.62India (Jewelove)24.62India (VowJewels)20India (The Vedic Crystals)21Diameter (cm)2.06Circumference (cm)6.46
US / CanadaUS, CA, MX11.5UK / AustraliaUK, IE, AU, NZ, ZAW½EUEU, FR, AT, BE, DK, SE, NO, FI66Germany / NetherlandsDE, NL21JapanJP, CN, KR, HK, SG24India (Bluestone)25.91India (Jewelove)25.91India (VowJewels)21India (The Vedic Crystals)22Diameter (cm)2.10Circumference (cm)6.59
US / CanadaUS, CA, MX12UK / AustraliaUK, IE, AU, NZ, ZAX½EUEU, FR, AT, BE, DK, SE, NO, FI67Germany / NetherlandsDE, NL21.5JapanJP, CN, KR, HK, SG25India (Bluestone)27.2India (Jewelove)27.2India (VowJewels)22India (The Vedic Crystals)23Diameter (cm)2.14Circumference (cm)6.72
US / CanadaUS, CA, MX12.5UK / AustraliaUK, IE, AU, NZ, ZAY½EUEU, FR, AT, BE, DK, SE, NO, FI68.5Germany / NetherlandsDE, NL22JapanJP, CN, KR, HK, SG26India (Bluestone)28.46India (Jewelove)28.46India (VowJewels)23India (The Vedic Crystals)24Diameter (cm)2.18Circumference (cm)6.85
US / CanadaUS, CA, MX13UK / AustraliaUK, IE, AU, NZ, ZAZ½EUEU, FR, AT, BE, DK, SE, NO, FI69.5Germany / NetherlandsDE, NL22JapanJP, CN, KR, HK, SG27India (Bluestone)29.74India (Jewelove)29.74India (VowJewels)24India (The Vedic Crystals)25Diameter (cm)2.22Circumference (cm)6.97

Have a specific cm measurement?

Enter it directly and skip scanning the table — the calculator is preset to centimeters below.

How would you like to find your size?

Measure the inside diameter of the ring — straight across the inner hole, not the outside of the band.

Lay the ring flat and measure straight across the inside edge.