Inside Circumference (mm) | Inside Circumference (Inches) | US & Canada | Germany | France | UK | Japan | Switzerland |
---|---|---|---|---|---|---|---|
44.2 | 1.74 | 3 | 14 | 44 | F | 4 | 4 |
45.4 | 1.79 | 3.5 | 14 1/2 | 44 1/4 | G | 5 | 5 1/4 |
46.75 | 1.84 | 4 | 15 | 46 1/2 | H 1/2 | 7 | 6 1/2 |
48 | 1.89 | 4.5 | 15 1/2 | 47 3/4 | I 1/2 | 8 | 7 3/4 |
49.3 | 1.94 | 5 | 15 3/4 | 49 | J 1/2 | 9 | 9 |
50.6 | 1.99 | 5.5 | 16 1/4 | 50 1/4 | K 1/2 | 10 | 10 1/4 |
51.8 | 2.04 | 6 | 16 1/2 | 51 1/2 | L 1/2 | 12 | 11 1/2 |
53.1 | 2.09 | 6.5 | 17 | 52 3/4 | M 1/2 | 13 | 12 3/4 |
54.5 | 2.14 | 7 | 17 1/4 | 54 | O | 14 | 14 |
55.7 | 2.19 | 7.5 | 17 3/4 | 55 1/4 | P | 15 | 15 1/4 |
57.15 | 2.24 | 8 | 18 | 56 1/2 | Q | 16 | 16 1/2 |
58.3 | 2.29 | 8.5 | 18 1/2 | 57 3/4 | R | 17 | 17 3/4 |
59.4 | 2.34 | 9 | 19 | 59 | S | 18 | 19 |
60.9 | 2.39 | 9.5 | 19 1/2 | 60 1/4 | - | 19 | 20 1/4 |
62 | 2.44 | 10 | 20 | 61 1/2 | T 1/2 | 20 | 21 1/2 |
63.3 | 2.49 | 10.5 | 20 1/2 | 62 3/4 | U 1/2 | 22 | 22 3/4 |
64.5 | 2.54 | 11 | 20 3/4 | 64 | V 1/2 | 23 | 24 |
65.8 | 2.59 | 11.5 | 21 | 65 1/4 | W 1/2 | 24 | 25 1/4 |
67.1 | 2.64 | 12 | 21 1/4 | 66 1/2 | Y | 25 | 26 1/2 |
68.3 | 2.69 | 12.5 | 21 3/4 | 67 3/4 | Z | 26 | 27 3/4 |
69.6 | 2.74 | 13 | 22 | 69 | - | 27 | 29 |
Find Your Ring Size
Ring Sizer
1. Get a Ring Sizer
Start by obtaining a ring sizer. You can purchase one online or visit a jewelry store that offers ring sizing services.
2. Find the Perfect Fit
Decide which finger you want to measure for the ring. Take the ring sizer and try on different sizes. Start with the larger sizes and work your way down until you find the one that fits comfortably.
2. Get the Right Size
Keep in mind that wider rings may require a slightly larger size for a comfortable fit. If you're planning to get a wide band ring, you may need to go up half a size or more. Use the chart above to match the measurement to the closest ring size.

Tape Measure or String
1.Tape Measure
- Wrap a tape measure around the finger where you plan to wear the ring.
- Make sure the tape measure is snug but not too tight.
- Read the measurement and refer to above ring size chart to find your corresponding ring size.
2.Measure with String
- Take a piece of string and wrap it around the finger where you want to wear the ring.
- Mark the point where the string overlaps with a pen.
- Refer to above ring size chart to find your correct ring size.

Measure an Existing Ring
1.Prepare a Ring
Choose a ring that fits the finger, then place it on a flat surface.
2.Measure the Inside Diameter
Use a ruler to measure the inside diameter of the ring. Ensure the ruler is lined up with the inside edge of the ring to achieve an accurate measure.
3.Convert to Circumference
Once you have the diameter measurement, convert it to the circumference. You can do this by multiplying the diameter by π (approximately 3.14). The resulting number will be the inside circumference of your ring.
