Ring Sizing Guide

South African, UK and American Ring Sizing Chart

There is no substitute for having your finger measured professionally, but it's not an exact science. Our fingers change in size from morning to evening, month to month and even Winter to Summer. The following chart is helpful to see how sizes compare internationally.
SA & UK American Diameter mm Circumference mm
A 0.5 11.5 36.25
B 1 12.3 38.64
C 1.5 12.7 39.9
D 2 13.1 41.15
E 2.5 13.5 42.41
F 3 13.9 43.67
G 3.25 14.3 44.92
H 3.75 14.7 46.18
I 4.25 15.1 47.44
J 4.75 15.5 48.69
K 5.75 15.9 49.95
L 5.5 16.3 51.24
M 6 16.7 52.46
N 6.5 17.1 53.72
O 7 17.5 54.98
P 7.5 17.9 56.23
Q 8 18.3 57.49
R 8.5 18.7 58.75
S 9 19.1 60
T 9.5 19.5 61.26
U 10 19.9 62.52
V 10.5 20.3 63.77
W 11 20.7 65
X 11.5 21.1 66.29
Y 12 21.5 67.51
Z 12.5 21.9 68.77
Z+1   22.3 69.99
Z+2   22.7 71.31
Z+3   23.1 72.57
Z+4   23.5 73.83
Z+5   23.9 75.08
Z+6   24.3 76.34
Z+7   24.7 77.6
Z+8   25.1 78.86

How to choose the correct size Ring that will fit properly

  • Decide on which finger you are going to wear the ring. The fingers on your dominant hand is normally larger than those of the other hand.
  • Cold weather tends to cause your fingers to shrink a bit.
  • High temperatures and other factors like water retention, injuries, etc. can cause swelling of the finger. Measure your finger in warm temperatures at the end of the day.
  • Keep the size of your knuckle in mind.
  • The perfect fit will mean that the ring will feel comfortable most of the time, but not always. Sometimes it might feel a bit loose and sometimes a bit tight - all depending on the weather, what you eat, whether you work with your hands a lot or whether you have some underlying medical conditions. It should fit snug without leaving marks or bulging. or having to use soap or oil to take it off.

Ceramic, Carbon Fibre and Metal rings

Correct fit: the ring should slide over the knuckle easily (with just a little bit of friction) to fit snugly, comfortably on the base of the finger (Not too tight). In removing the ring you should use a little extra force and feel a bit of resistance.

Silicone rings

  • If your knuckle is a lot larger than the base of your finger, you need to measure both the base of your finger and your knuckle, then select a size between the two.
  • These rings stretch to pass the knuckle and need to fit snugly, yet comfortably on the base of the finger.
  • No half sizes in silicone, you need to take the smaller size, eg: you need size 10.5 you will take size 10.

Getting the correct size

METHOD 1: Measuring the Diameter (Inside)

  1. Measure a metal ring that you already own and fits properly on the exact same finger as the one for your new ring.
  2. Put this ring onto a ruler and measure the inside centre line (diameter) in millimeters.
  3. Now find the size for your diameter measurement on the International conversion chart above.
  4. Note: If you ordered the incorrect size, a replacement fee will be charged.

Remember: If you have large knuckles your Resin, Resin Wood, Tungsten wedding band will be sized to fit over that part and will most probably be a little loose around the base of your finger. A silicone ring is flexible and fits snugly around the base of your finger but will stretch to pass the knuckle.

Method 2: Measuring the circumference (outside)

  1. Cut a piece of string (preferably not stretchy) or a strip of paper (plus-minus 8mm wide x 120mm in length).
  2. Wrap the string/paper very tight around the ring finger.
  3. Use pen/pencil to mark the string/paper where it completes the circle and the two ends meet.
  4. Lay the marked string/paper flat on a ruler and measure the length of the marked area in millimeters.
  5. Use the International conversion chart above to find your corresponding ring size in the circumference table.

If you have large knuckles your Resin, Resin Wood, Tungsten wedding band will be sized to fit over that part and will most probably be a little loose around the base of your finger. A silicone ring is flexible and fits snugly around the base of your finger, but will stretch to pass the knuckle.

Silicone Rings

  • Silicone rings are made from a more flexible material than metal and other wedding rings, that’s why we do not keep half sizes.
  • Should a ring size chart indicate that your measurement falls between two numbers - we recommend that you order the smaller size.
  • Silicone rings relax after a few days of wear. If you order the bigger number, you may find that your ring is too loose after a couple of days.
  • The smaller ring may feel a little tight(not uncomfortably or painfully) at the beginning but will soon relax to the perfect fit.

Using both methods for example: if your diameter is 20mm = Size 10, and your circumference is 68mm = size 12, then you should take size 11.