How to measure a ring size?

If you want to order a ring but you do not know your/her/his size, here are a few options that you might find helpful.

  • Take a current ring to a local jewellery store to size it professionally.
  • Make your own paper ring sizer.
  • Print the paper ring sizer and make sure the scale is 100%.
  • Measure the 3 ½ inches or 8.9cm with a ruler to ensure the scale is precise.
  • Cut along the outline and make a small slit on the vertical line on the left end.
  • Pull the pointed end through the slit. Make sure it fits your finger snugly.
  • The number that lines up with the slit indicates the rings size.
  • Measure a few more times to ensure accuracy.

Please be reminded your ring should fit your finger comfortably. It should be a snug fit that it will not fall off but loose enough to slide over your knuckle.

The finger size could change during the day or due to the weather. For more accurate measurement, it is better to measure your fingers at the end of the day and when your fingers are warm as they are smaller in the morning and when it is cold.

  • Measure your current ring.
  • Print the ring size chart and make sure the scale is 100%.
  • Place your ring over the circles on the printed paper.
  • The inside edge of the ring should match on the outline of the circle. The outline should be just visible inside the ring.

If your ring falls between two sizes, it may be advisable to go for the larger size especially for wider bands.

  • If you have a ruler, you can measure the inside diameter of your ring which helps you find the ring size from the chart below,

(Each number is verified by THE SUI STUDIO)

Inside diameter (mm)Ring size (Europe)
13.342
13.743
14.144
14.545
14.746
14.947
15.348
15.549
15.950
16.351
16.752
16.953
17.154
17.555
17.956
18.257
18.558
18.859
19.260
19.661
19.862
20.263
20.564
20.965
21.6566
21.867
22.068
22.269
22.570