How to measure your ring size

How to measure an existing ring

If you want to measure an existing ring to determine its size, here's how you can do it:

  1. Find a ruler with millimetre measurements for greater accuracy
  2. Measure the diameter of the ring by placing it on the ruler and measuring across the widest part of the inside of the ring. Make sure to measure from the inside of one edge of the ring to the inside of the opposite edge.
  3. Once you have the diameter measurement, you can use a ring size chart to determine the ring size. There are many ring size charts available online, which provide conversions between diameter measurements and ring sizes. Make sure to choose a chart that corresponds to the country where the ring was purchased, as ring sizes can vary between countries.

It's important to note that the width of the band can affect the ring size, so if the ring has a wide band, it may be better to go up a size to ensure a comfortable fit. Additionally, if the ring has a unique shape or design, it may be difficult to get an accurate measurement, and it may be best to have a professional jeweller measure it for you.

Internal Diameter (mm) 14.1 14.9 15.7 16.5 17.3 18.1
US/ Canada Ring Size 3 4 5 6 7 8
UK/AU Ring Size F H J L N P
German Ring Size 14 15 15 3/4 16 1/2 17 1/4 18

Internal Diameter (mm) 19.0 19.8 20.6 21.4 22.2
US/ Canada Ring Size 9 10 11 12 13
UK/AU Ring Size R T V X Z
German Ring Size 19 20 20 3/4 21 1/4 22

How to measure your finger to find ring size

To measure your finger to find your perfect ring size:

  1. Get a piece of string or a thin strip of paper and wrap it around the base of the finger where you plan to wear the ring. Make sure the string or paper fits snugly but not too tight.
  2. Mark the point on the string or paper where it overlaps to make a complete circle around your finger.
  3. Measure the length of the string or paper from the starting point to the marked point in millimetres. Use a ruler or a tape measure to get an accurate measurement.
  4. Use a ring size chart to determine your ring size. Ring size charts are available online, and they will provide conversions between the measured length and the appropriate ring size. Make sure to choose a chart that corresponds to the country where the ring will be purchased, as ring sizes can vary between countries.
Circum-ference (mm) 44.2 46.8 49.3 51.9 54.4 57.0
US/ Canada Ring Size 3 4 5 6 7 8
UK/AU Ring Size F H J L N P
German Ring Size 14 15 15 3/4 16 1/2 17 1/4 18

Circum-ference (mm)		 59.5 62.1 64.6 67.2 67.7
US/ Canada Ring Size 9 10 11 12 13
UK/AU Ring Size R T V X Z
German Ring Size 19 20 20 3/4 21 1/4 22

Tips on Measuring Ring Size

  • Measure at the right time - Your finger size can vary throughout the day and with changes in temperature, so it's best to measure your finger in the afternoon or evening when your finger is at its largest size.
  • Measure the correct finger - Make sure you measure the finger on which you intend to wear the ring. Different fingers can have different sizes, and your dominant hand may be slightly larger than your non-dominant hand.
  • Use a comfortable fit - The ring should fit snugly but comfortably on your finger. Make sure the string or paper is not too tight when measuring your finger, as this can lead to an inaccurate measurement.
  • Measure multiple times - It's a good idea to measure your finger multiple times to ensure consistency in your measurements. If you get different measurements, take the average of the measurements to get a more accurate size.
  • Account for the width of the band - If you plan to wear a wide-band ring, you may need to go up a size to ensure a comfortable fit.
  • Use a sizing chart from a reputable source - Ring sizing charts can vary between manufacturers and countries, so make sure to use a sizing chart from a reputable source to ensure accuracy.