Skip to main content
RingSizeConvert.com

US to India Ring Size

Enter a US/Canada size to find the corresponding Indian size number, or scan the full conversion chart.

Need to convert in reverse? Go to India to US Ring Size Converter →

Common US to India equivalents

These examples share the same inner diameter. Use the calculator for another size or an in-between measurement.

  • US 5 corresponds to India 9.32 at 15.7 mm.
  • US 7 corresponds to India 14.41 at 17.32 mm.
  • US 9 corresponds to India 19.53 at 18.95 mm.
How would you like to find your size?

Numeric size (e.g. 8) for US/Canada, EU, or Japan — or a letter size (e.g. P 1/2) for UK/Australia.

Converting US ring sizes to Indian numbers

US ring sizes use numeric increments anchored to inner diameter (e.g., US size 6 is 16.5 mm). Indian jewelry standards use a numeric scale anchored to circumference in millimeters minus 40. Therefore, a US size 6 corresponds to an Indian size 12, a US size 7 corresponds to an Indian size 14, and a US size 8 corresponds to an Indian size 17.

US to India reference table

US to India ring size conversion
US / CanadaUS, CA, MXIndia (BlueStone)INDiameter (mm)
US / CanadaUS, CA, MX3India (BlueStone)IN4.2Diameter (mm)14.07
US / CanadaUS, CA, MX3.5India (BlueStone)IN5.49Diameter (mm)14.48
US / CanadaUS, CA, MX4India (BlueStone)IN6.75Diameter (mm)14.88
US / CanadaUS, CA, MX4.5India (BlueStone)IN8.03Diameter (mm)15.29
US / CanadaUS, CA, MX5India (BlueStone)IN9.32Diameter (mm)15.7
US / CanadaUS, CA, MX5.5India (BlueStone)IN10.58Diameter (mm)16.1
US / CanadaUS, CA, MX6India (BlueStone)IN11.87Diameter (mm)16.51
US / CanadaUS, CA, MX6.5India (BlueStone)IN13.16Diameter (mm)16.92
US / CanadaUS, CA, MX7India (BlueStone)IN14.41Diameter (mm)17.32
US / CanadaUS, CA, MX7.5India (BlueStone)IN15.7Diameter (mm)17.73
US / CanadaUS, CA, MX8India (BlueStone)IN16.99Diameter (mm)18.14
US / CanadaUS, CA, MX8.5India (BlueStone)IN18.25Diameter (mm)18.54
US / CanadaUS, CA, MX9India (BlueStone)IN19.53Diameter (mm)18.95
US / CanadaUS, CA, MX9.5India (BlueStone)IN20.79Diameter (mm)19.35
US / CanadaUS, CA, MX10India (BlueStone)IN22.08Diameter (mm)19.76
US / CanadaUS, CA, MX10.5India (BlueStone)IN23.37Diameter (mm)20.17
US / CanadaUS, CA, MX11India (BlueStone)IN24.62Diameter (mm)20.57
US / CanadaUS, CA, MX11.5India (BlueStone)IN25.91Diameter (mm)20.98
US / CanadaUS, CA, MX12India (BlueStone)IN27.2Diameter (mm)21.39
US / CanadaUS, CA, MX12.5India (BlueStone)IN28.46Diameter (mm)21.79
US / CanadaUS, CA, MX13India (BlueStone)IN29.74Diameter (mm)22.2