Printable ring size chart and sizer
Print this page at one hundred percent scale to get a ring sizer that measures true. Match a ring you already own to the circles, or use the chart as a full US, UK and EU reference.
This printable ring size chart works two ways. You can print the ring size circles and slide an existing ring over them until you find the circle that matches the inside edge, or you can print the finger sizer strip, wrap it around your finger and read the size directly.
Print at one hundred percent scale, with any page scaling or fit to page setting turned off, or the circles will not measure true. Use the calibration bar to confirm the scale before you trust a reading.
Ring sizer (true scale)
14.1 mm
14.5 mm
14.9 mm
15.3 mm
15.7 mm
16.1 mm
16.5 mm
16.9 mm
17.3 mm
17.7 mm
18.1 mm
18.5 mm
19 mm
19.4 mm
19.8 mm
20.2 mm
20.6 mm
21 mm
21.4 mm
21.8 mm
22.2 mm
Place a ring you already own over the circles. The correct size is the circle whose inside edge lines up with the inside of your ring. Read the US size and millimetre diameter printed inside it, then use the chart for UK and EU.
Printable ring size chart
| US / Canada | UK / Australia | EU / ISO | Japan / China | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|---|
| 3 | F | 44 | 4 | 14.1 | 44.2 |
| 3.5 | G | 45 | 5 | 14.5 | 45.5 |
| 4 | H | 47 | 7 | 14.9 | 46.8 |
| 4.5 | I | 48 | 8 | 15.3 | 48 |
| 5 | J | 49 | 9 | 15.7 | 49.3 |
| 5.5 | K | 50 | 10 | 16.1 | 50.6 |
| 6 | L | 52 | 12 | 16.5 | 51.9 |
| 6.5 | M | 53 | 13 | 16.9 | 53.1 |
| 7 | N | 54 | 14 | 17.3 | 54.4 |
| 7.5 | O | 56 | 15 | 17.7 | 55.7 |
| 8 | P | 57 | 16 | 18.1 | 57 |
| 8.5 | Q | 58 | 17 | 18.5 | 58.3 |
| 9 | R | 59 | 18 | 19 | 59.5 |
| 9.5 | S | 61 | 19 | 19.4 | 60.8 |
| 10 | T | 62 | 20 | 19.8 | 62.1 |
| 10.5 | U | 63 | 22 | 20.2 | 63.4 |
| 11 | V | 64 | 23 | 20.6 | 64.6 |
| 11.5 | W | 66 | 24 | 21 | 65.9 |
| 12 | X | 67 | 25 | 21.4 | 67.2 |
| 12.5 | Y | 68 | 26 | 21.8 | 68.5 |
| 13 | Z | 69 | 27 | 22.2 | 69.7 |
Last reviewed and updated on July 2, 2026. Conversion tables are checked against published international sizing standards.