India to UK Ring Size

Enter an Indian ring size to find the corresponding UK/Australia letter size, or scan the full conversion chart.

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

Common India to UK equivalents

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

India 9.32 corresponds to UK J½ at 15.7 mm.
India 14.41 corresponds to UK N½ at 17.32 mm.
India 19.53 corresponds to UK R½ at 18.95 mm.

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Your size is in

These brand charts are for traditional gold/diamond jewelry. Fashion or stainless-steel rings sold in India often print the raw diameter in millimeters as the 'size' (e.g. size 18 = 18mm) instead — check which convention your specific ring or listing uses before ordering.

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 Indian numbers to UK letter sizes

Indian sizes in the Bluestone convention equal inner circumference in millimeters minus 40, so an Indian size 12 means a 52 mm circumference and an Indian size 14 means about 54.4 mm. Match that circumference to the UK letter scale, where each full letter step is 1.25 mm: Indian size 12 lands near UK L½ and Indian size 14 near UK N½. Because India has no single universal standard, verify the result against your jeweler's own chart.

India to UK reference table

India to UK ring size conversion
India (BlueStone)IN	UK / AustraliaUK, IE, AU, NZ, ZA	Diameter (mm)
India (BlueStone)IN4.2	UK / AustraliaUK, IE, AU, NZ, ZAF	Diameter (mm)14.07
India (BlueStone)IN5.49	UK / AustraliaUK, IE, AU, NZ, ZAG	Diameter (mm)14.48
India (BlueStone)IN6.75	UK / AustraliaUK, IE, AU, NZ, ZAH	Diameter (mm)14.88
India (BlueStone)IN8.03	UK / AustraliaUK, IE, AU, NZ, ZAI	Diameter (mm)15.29
India (BlueStone)IN9.32	UK / AustraliaUK, IE, AU, NZ, ZAJ½	Diameter (mm)15.7
India (BlueStone)IN10.58	UK / AustraliaUK, IE, AU, NZ, ZAK½	Diameter (mm)16.1
India (BlueStone)IN11.87	UK / AustraliaUK, IE, AU, NZ, ZAL½	Diameter (mm)16.51
India (BlueStone)IN13.16	UK / AustraliaUK, IE, AU, NZ, ZAM½	Diameter (mm)16.92
India (BlueStone)IN14.41	UK / AustraliaUK, IE, AU, NZ, ZAN½	Diameter (mm)17.32
India (BlueStone)IN15.7	UK / AustraliaUK, IE, AU, NZ, ZAO½	Diameter (mm)17.73
India (BlueStone)IN16.99	UK / AustraliaUK, IE, AU, NZ, ZAP½	Diameter (mm)18.14
India (BlueStone)IN18.25	UK / AustraliaUK, IE, AU, NZ, ZAQ¼	Diameter (mm)18.54
India (BlueStone)IN19.53	UK / AustraliaUK, IE, AU, NZ, ZAR½	Diameter (mm)18.95
India (BlueStone)IN20.79	UK / AustraliaUK, IE, AU, NZ, ZAS½	Diameter (mm)19.35
India (BlueStone)IN22.08	UK / AustraliaUK, IE, AU, NZ, ZAT½	Diameter (mm)19.76
India (BlueStone)IN23.37	UK / AustraliaUK, IE, AU, NZ, ZAU½	Diameter (mm)20.17
India (BlueStone)IN24.62	UK / AustraliaUK, IE, AU, NZ, ZAV½	Diameter (mm)20.57
India (BlueStone)IN25.91	UK / AustraliaUK, IE, AU, NZ, ZAW½	Diameter (mm)20.98
India (BlueStone)IN27.2	UK / AustraliaUK, IE, AU, NZ, ZAX½	Diameter (mm)21.39
India (BlueStone)IN28.46	UK / AustraliaUK, IE, AU, NZ, ZAY½	Diameter (mm)21.79
India (BlueStone)IN29.74	UK / AustraliaUK, IE, AU, NZ, ZAZ½	Diameter (mm)22.2