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RingSizeConvert.com

Convert Inches to Ring Size

Measured in inches with a household ruler or tape measure? Enter the number below and we'll match it to a standard size.

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.

Getting an accurate inch measurement

Inch rulers are usually marked in sixteenths, which makes it easy to lose precision on a small measurement — a ring's inside diameter is typically well under an inch. Where possible, use a ruler with fine enough markings, or measure a string/paper strip's circumference against the ruler instead of trying to read a small diameter directly.

Quick inches reference

Common sizes and their inch measurements, at a glance.

Common ring sizes in inches
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 (in)Circumference (in)
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 (in)0.586Circumference (in)1.841
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 (in)0.618Circumference (in)1.942
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 (in)0.650Circumference (in)2.042
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 (in)0.682Circumference (in)2.142
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 (in)0.714Circumference (in)2.244
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 (in)0.746Circumference (in)2.344
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 (in)0.778Circumference (in)2.444
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 (in)0.810Circumference (in)2.544
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 (in)0.842Circumference (in)2.646

View the full ring size chart in inches →