What You Will Need:
- Piece of Paper
- Pencil/Pen
- Ruler
- Scissors

Step #1
Cut a long thin strip of paper (less than 1/2 inch wide, any length).

Step #2
Wrap the strip of paper around the finger ensuring that the paper is placed just below the knuckle and mark the paper where is first overlaps.

Step #3
Lay the strip of paper flat and measure in millimeters from the start of the paper to the mark you made in step #2 (round to the nearest mm).

Step #4
Your Ring Size Is:
Ring Size Measurements | |||
---|---|---|---|
Finger Circumference | Ring Size | ||
(cm) | (mm) | USA & Canada |
UK, EIRA, AU |
4.9 | 49.32 | 5 | J1/2 |
5.2 | 51.83 | 6 | L1/2 |
5.4 | 54.34 | 7 | N1/2 |
5.7 | 57.17 | 8 | P1/2 |
5.9 | 59.37 | 9 | R1/2 |
6.2 | 62.20 | 10 | T1/2 |
6.5 | 64.71 | 11 | V1/2 |
6.7 | 66.91 | 12 | X1/2 |
7.0 | 69.74 | 13 | Z1/2 |
7.2 | 72.30 | 14 | Z21/2 |
7.5 | 74.80 | 15 | Z41/2 |
Keep in Mind…
- Ring sizes are not universal across all brands and manufacturers:
AERA Rings uses Traditional US Ring Sizing. If ordering elsewhere, check your measurement against their sizing guide. - Big knuckles can affect your size:
If your knuckle is much larger than the base of your finger then measure both the base of your finger and your knuckle and use the average. - Finger size changes:
Temperature, physical activity & medication can all affect the size of your fingers. For an accurate measurement only measure when at room temperature and not physically active. - Bigger is always better:
If you hesitate between two sizes, always go with the larger of the two. This will allow for finger swelling and future finger growth.