Ring Size Chart| UK Size | Diameter | Circumference | | A | 11.5 mm | 36.25 mm | | B | 12.3 mm | 38.64 mm | | C | 12.7 mm | 39.90 mm | | D | 13.1 mm | 41.15 mm | | E | 13.5 mm | 42.41 mm | | F | 13.9 mm | 43.67 mm | | G | 14.3 mm | 44.92 mm |
| H | 14.7 mm | 46.18 mm | | I | 15.1 mm | 47.44 mm | | J | 15.5 mm | 48.69 mm | | K | 15.9 mm | 49.95 mm | | L | 16.3 mm | 51.24 mm | | M | 16.7 mm | 52.46 mm | | N | 17.1 mm | 53.72 mm | | O | 17.5 mm | 54.98 mm | | P | 17.9 mm | 56.23 mm | | Q | 18.3 mm | 57.49 mm | | R | 18.7 mm | 58.75 mm | | S | 19.1 mm | 60.00 mm | | T | 19.5 mm | 61.26 mm | | U | 19.9 mm | 62.52 mm | | V | 20.3 mm | 63.77 mm | | W | 20.7 mm | 65.00 mm | | X | 21.1 mm | 66.29 mm | | Y | 21.5 mm | 67.51 mm | | Z | 21.9 mm | 68.77 mm | | Z+1 | 22.3 mm | 69.99 mm | | Z+2 | 22.7 mm | 71.31 mm | | Z+3 | 23.1 mm | 72.57 mm | | Z+4 | 23.5 mm | 73.83 mm | | Z+5 | 23.9 mm | 75.08 mm | | Z+6 | 24.3 mm | 76.34 mm | | Z+7 | 24.7 mm | 77.60 mm | | Z+8 | 25.1 mm | 78.86 mm |
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| Page last modified on 7 Nov, 2002 |
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