How to know your ring size
Step 1
Cut a strip of paper or piece of string to wrap around your finger
Step 2
Wrap it at the base of the finger you would like to measure and mark where it overlaps
Step 3
Measure the piece of paper or string with a ruler and round up to the nearest mm
NEBŌ DIAMONDS
Ring Size Conversion Chart
View the chart below to see how standard US ring sizes map to inside circumference and international sizing systems.
All NEBŌ rings use standard US sizing. Engagement rings, wedding bands, and fashion rings follow the same size format.
Swipe to view more countries
| Inside Circumference |
US, Canada, Mexico |
UK, Australia, Ireland, New Zealand, South Africa |
Europe / ISO (France) |
Germany, Russia, Ukraine, Asia |
India, China, Japan, South America, Turkey, Israel |
Italy, Spain, Netherlands, Switzerland |
|
|---|---|---|---|---|---|---|---|
| IN | MM | ||||||
| 1.74 | 44.2 | 3 | F | 44 | 14 | 4 | 4 |
| 1.77 | 44.8 | 3.25 | F ½ | 45 | 14 ¼ | — | 4 ⅝ |
| 1.79 | 45.5 | 3.5 | G | 45.5 | 14 ½ | 5 | 5 ¼ |
| 1.82 | 46.1 | 3.75 | G ½ | 46 | 14 ¾ | 6 | 5 ⅞ |
| 1.84 | 46.8 | 4 | H | 47 | 15 | 7 | 6 ½ |
| 1.87 | 47.4 | 4.25 | H ½ | 47.5 | — | — | 7 ⅛ |
| 1.89 | 48 | 4.5 | I | 48 | 15 ¼ | 8 | 7 ¾ |
| 1.92 | 48.7 | 4.75 | J | 48.5 | 15 ½ | — | 8 ⅜ |
| 1.94 | 49.3 | 5 | J ½ | 49 | 15 ¾ | 9 | 9 |
| 1.97 | 50 | 5.25 | K | 50 | 16 | — | 9 ⅝ |
| 1.99 | 50.6 | 5.5 | K ½ | 50.5 | 16 ¼ | 10 | 10 ¼ |
| 2.02 | 51.2 | 5.75 | L | 51 | — | 11 | 10 ⅞ |
| 2.04 | 51.9 | 6 | L ½ | 52 | 16 ½ | 12 | 11 ½ |
| 2.07 | 52.5 | 6.25 | M | 52.5 | 16 ¾ | — | 12 ⅛ |
| 2.09 | 53.1 | 6.5 | M ½ | 53 | 17 | 13 | 12 ¾ |
| 2.12 | 53.8 | 6.75 | N | 54 | — | — | 13 ⅜ |
| 2.14 | 54.4 | 7 | N ½ | 54.5 | 17 ¼ | 14 | 14 |
| 2.17 | 55.1 | 7.25 | O | 55 | 17 ½ | — | 14 ⅝ |
| 2.19 | 55.7 | 7.5 | O ½ | 56 | 17 ¾ | 15 | 15 ¼ |
| 2.22 | 56.3 | 7.75 | P | 56.5 | 18 | — | 15 ⅞ |
| 2.24 | 57 | 8 | P ½ | 57 | — | 16 | 16 ½ |
| 2.27 | 57.6 | 8.25 | Q | 58 | 18 ¼ | — | 17 ⅛ |
| 2.29 | 58.3 | 8.5 | Q ½ | 58.5 | 18 ½ | 17 | 17 ¾ |
| 2.32 | 58.9 | 8.75 | R | 59 | 18 ¾ | — | 18 ⅜ |
| 2.34 | 59.5 | 9 | R ½ | 60 | 19 | 18 | 19 |
| 2.37 | 60.2 | 9.25 | S | 60.5 | 19 ¼ | — | 19 ⅝ |
| 2.39 | 60.8 | 9.5 | S ½ | 61 | 19 ½ | 19 | 20 ¼ |
| 2.42 | 61.4 | 9.75 | T | 61.5 | — | — | 20 ⅞ |
| 2.44 | 62.1 | 10 | T ½ | 62 | 19 ¾ | 20 | 21 ½ |
| 2.47 | 62.7 | 10.25 | U | 63 | 20 | 21 | 22 ⅛ |
| 2.49 | 63.4 | 10.5 | U ½ | 63.5 | — | 22 | 22 ¾ |
| 2.52 | 64 | 10.75 | V | 64 | 20 ½ | — | 23 ⅜ |
| 2.54 | 64.6 | 11 | V ½ | 65 | 20 ¾ | 23 | 24 |
| 2.57 | 65.3 | 11.25 | W | 65.5 | — | — | 24 ⅝ |
| 2.59 | 65.9 | 11.5 | W ½ | 66 | 21 | 24 | 25 ¼ |
| 2.62 | 66.6 | 11.75 | X | 67 | 21 ¼ | — | 25 ⅞ |
| 2.65 | 67.2 | 12 | X ½ | 67.5 | 21 ½ | 25 | 26 ½ |
| 2.68 | 68.1 | 12.25 | Y | 68 | — | — | 27 ⅛ |
| 2.71 | 68.5 | 12.5 | Z | 69 | 21 ¾ | 26 | 27 ¾ |
| 2.72 | 69.1 | 12.75 | Z ½ | 69.5 | — | — | 28 ⅜ |
| 2.75 | 69.7 | 13 | — | 70 | 22 | 27 | 29 |
International conversions are approximate. For the most accurate fit, have your finger professionally measured by a jeweler.
