1. Use a ring that fits the desired finger
  2. Measure the internal diameter of the ring (in mm). Ensure your ruler starts at the 0mm mark.

Use the size chart to determine your ring size.

Internal Diameter(mm) US/CAN UK/AUS German
16.5mm 6 N 16 1/2
17.3mm 7 P 17 1/4
19.8mm 8 R 18
19mm 9 T 19
19.8mm 10 V 20
20.6mm 11 F 20 3/4
21.4mm 12 X 21 1/4
22.2mm 13 Z 22


  1. 1. Wrap the measuring tape around your wrist just above the wrist bone with your palm open and facing up.

  2. 2. Wrap a strip of paper around your finger where you’d like your ring to be. Make sure that the paper is pulled snug to your finger (the tighter the better) to find your best fit.

  3. 3. Mark the spot where the paper meets and measure the distance with a ruler (mm).

Use the size chart to determine your ring size.

Circumference (mm) US/CAN
51.9mm 6
54.4mm 7
57.0mm 8
59.5mm 9
62.1mm 10
64.6mm 11
67.2mm 12
67.7mm 13

Tips On How To Measure

  1. 1. Measure your ring size at the end of the day when fingers are at their largest.

  2. 2. Consider the width of the band, a particularly thick band will feel tighter than a thin band so you may want to buy a full size larger that your normal ring size.

  3. 3. Do not measure your hands when they are cold, they may have shrunk up to half a size.

  4. 4. Alcohol and salt can make your fingers swell so refrain from measuring your ring size after cocktails and appetizers.