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.

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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, MX	IndiaIN	Diameter (mm)
US / CanadaUS, CA, MX3	IndiaIN4.2	Diameter (mm)14.07
US / CanadaUS, CA, MX3.5	IndiaIN5.49	Diameter (mm)14.48
US / CanadaUS, CA, MX4	IndiaIN6.75	Diameter (mm)14.88
US / CanadaUS, CA, MX4.5	IndiaIN8.03	Diameter (mm)15.29
US / CanadaUS, CA, MX5	IndiaIN9.32	Diameter (mm)15.7
US / CanadaUS, CA, MX5.5	IndiaIN10.58	Diameter (mm)16.1
US / CanadaUS, CA, MX6	IndiaIN11.87	Diameter (mm)16.51
US / CanadaUS, CA, MX6.5	IndiaIN13.16	Diameter (mm)16.92
US / CanadaUS, CA, MX7	IndiaIN14.41	Diameter (mm)17.32
US / CanadaUS, CA, MX7.5	IndiaIN15.7	Diameter (mm)17.73
US / CanadaUS, CA, MX8	IndiaIN16.99	Diameter (mm)18.14
US / CanadaUS, CA, MX8.5	IndiaIN18.25	Diameter (mm)18.54
US / CanadaUS, CA, MX9	IndiaIN19.53	Diameter (mm)18.95
US / CanadaUS, CA, MX9.5	IndiaIN20.79	Diameter (mm)19.35
US / CanadaUS, CA, MX10	IndiaIN22.08	Diameter (mm)19.76
US / CanadaUS, CA, MX10.5	IndiaIN23.37	Diameter (mm)20.17
US / CanadaUS, CA, MX11	IndiaIN24.62	Diameter (mm)20.57
US / CanadaUS, CA, MX11.5	IndiaIN25.91	Diameter (mm)20.98
US / CanadaUS, CA, MX12	IndiaIN27.2	Diameter (mm)21.39
US / CanadaUS, CA, MX12.5	IndiaIN28.46	Diameter (mm)21.79
US / CanadaUS, CA, MX13	IndiaIN29.74	Diameter (mm)22.2