Don’t do it at home! Visit your local jeweler. Most accurate!
But is possible to measure it yourself also:
1. Wrap a thin strip of paper or piece of string around the base of the finger you want to measure.
2. With a pen, mark the point on the paper or string where it overlaps, forming a circle on the finger.
3. Measure the length of the paper or string using a flat ruler, from the starting point to the pen mark.
4. Then find the matching size in the chart below.
Tips: Don’t measure cold fingers, as this is when fingers are the smallest. The best time to measure a finger is at the end of the day when the finger is the largest. Take at least two measurements for accuracy.
Buying for someone else: Borrow one of your partner’s rings and slide it down a tapered candle. Measure the circumference of the candle where the ring stops. Use the chart below to determine the correct ring size.
| Inside Circumference | Size | |
| Inches | Millimeters | EU – US ring size |
| 1.84 | 46.8 | 15mm – 4 US |
| 1.89 | 48 | 15.29mm – 4.5 US |
| 1.94 | 49.3 | 15.7mm – 5 US |
| 1.99 | 50.6 | 16.1mm – 5.5 US |
| 2.041 | 51.8 | 16.51mm – 6 US |
| 2.091 | 53.1 | 16.92mm – 6.5 US |
| 2.141 | 54.4 | 17.32mm – 7 US |
| 2.192 | 55.7 | 17.73mm – 7.5 US |
| 2.242 | 56.9 | 18.14mm – 8 US |
| 2.292 | 58.2 | 18.54mm – 8.5 US |
| 2.342 | 59.5 | 18.95mm – 9 US |
| 2.393 | 60.8 | 19.35mm – 9.5 US |
| 2.443 | 62.1 | 19.76mm – 10 US |
| 2.493 | 63.3 | 20.17mm – 10.5 US |
| 2.543 | 64.6 | 20.57mm – 11 US |
| 2.594 | 65.9 | 20.98mm – 11.5 US |
| 2.644 | 67.2 | 21.39mm – 12 US |
| 2.694 | 68.4 | 21.79mm – 12.5 US |
| 2.744 | 69.7 | 22.2mm – 13 US |
| 2.795 | 71 | 22.61mm – 13.5 US |
| 2.845 | 72.3 | 23mm – 14 US |
| 2.895 | 73.5 | 23.42mm – 14.5 US |
| 2.945 | 74.8 | 23.83mm – 15 US |
| 2.996 | 76.1 | 24.23mm – 15.5 US |
| 3.046 | 77.4 | 24.64mm – 16 US |