RING SIZE GUIDE: HOW TO MEASURE YOUR RING SIZE

One of the key steps in our engagement ring guide is making sure the ring is sized perfectly. Although most rings can be resized, we recommend having the perfect ring size right from the start. Having to keep a new gorgeous engagement ring in its original jewellery box, rather than wearing it proudly can take away a bit of the excitement at the time of the proposal.

Our ring size guide is designed to help you find the perfect fit – whether you are planning on surprising your significant other with a romantic proposal (refer to our secret guide to determine her ring size), you are looking for a beautiful wedding band or simply wanting to spoil yourself with a diamond creation. Our guide offers guidance on how to get your ring size, as well as some useful tips on what to consider when measuring your ring finger size.

How to measure your ring size using a piece of string

HOW TO MEASURE YOUR RING SIZE AT HOME

If you want to know your ring size before visiting a jeweller there is an easy way of finding the perfect fit. Simply follow the steps below to measure your ideal ring’s inner circumference, then find the corresponding size from our engagement ring size guide.

How to measure your ring size using string


  • Cut a piece of thin wire or non-stretchable string.
  • Wrap the piece of wire or string around the finger where the ring will be worn, making sure it’s not too tight or too loose.
  • Find the exact place where the wire or string completes the circle around your finger then use a marker to draw a line to mark the spot.
  • To find the inner circumference of the ring, measure the “completed circle” piece of the wire or string with a ruler (in mm).
  • Use the engagement ring size guide to convert the inner circumference measurements to your ideal ring size.

For your convenience our ring size chart includes South African / Australian / UK ring sizes with the respective converted Canadian / US ring sizes. This chart is applicable to both women’s and men’s ring sizes.

How to measure your ring size using another ring

How to measure your ring size using another ring

The string method works like a charm but is not ideal if you want to keep the element of surprise for the proposal. Our second ring size measuring method requires a bit of crafty secrecy, but sweeping her off her feet with a perfectly sized engagement ring will be well worth it.

If your soon-to-be-fiancé already has a ring that fits well on her ring finger you can determine her ring size by tracing the inner circumference of the ring with a very sharp pencil on a piece of paper. Measure the circle’s diameter in millimetres and find the corresponding size on the ring size chart.

Ring size measurements South Africa



HOW ARE RING SIZES MEASURED IN SOUTH AFRICA?

Various ring size systems are used all over the world. South Africa and the United Kingdom use the same system, while ring sizes in the US and Canada are measured on a different scale.

South Africa / UK Ring Size System

This system is also used by Australia, Ireland and New Zealand. Ring sizes are indicated by letters of the alphabet with half sizes in between. Each half size up represents an increase of 0.75 mm of the ring's inside circumference.

US Ring Size System

The US ring size system is based on the non-metric British inch. This system is used in the United States, Canada and Mexico.

Engagement ring size guide

ENGAGEMENT RING SIZE GUIDE

After you have measured the inner circumference or diameter of your ring, refer to the ring size chart below to find your ideal ring size. The chart can also be used for ring size conversion and to see how sizes compare internationally. Remember, measuring your ring finger size is not an exact science as our fingers change in size from morning to evening and even from season to season.

RING SIZE CHART

INNER DIAMETER (mm) INNER CIRCUMFERENCE (mm) SOUTH AFRICAN / AUSTRALIAN / UK RING SIZES CANADA / US RING SIZES
12 37.8 A 0.5
12.4 39.1 B 1
12.9 40.4 C 1.5
13.3 41.6 D 2
13.7 42.9 E 2.5
14.1 44.2 F 3
14.5 45.5 G 3.5
14.9 46.7 H 4
15.3 48.0 I 4.5
15.5 48.7 J 4.75
15.9 49.9 K 5.25
16.3 51.2 L 5.75
16.7 52.5 M 6.25
17.1 53.8 N 6.75
17.5 55.0 O 7.25
17.9 56.3 P 7.75
18.3 57.6 Q 8.25
18.7 58.9 R 8.75
19.2 60.1 S 9.25
19.6 61.4 T 9.75
20 62.7 U 10.25
20.4 64 V 10.75
20.8 65.2 W 11.25
21.2 66.5 X 11.75
21.6 67.8 Y 12.25
21.8 68.4 Z 12.5


Have your ring size measured at Shimansky Jewellers

WHERE CAN I GET MY RING SIZE MEASURED?

There is no substitute for having your ring size measured professionally. Shimansky’s diamond experts will gladly help you find the perfect fit – whether you are browsing our exquisite collection of engagement rings or you need assistance with wedding ring sizes for women or men’s ring sizes. We invite you to visit a Shimansky store near you.

VISIT A SHIMANSKY STORE