Ring Size Guide

RING SIZE GUIDE

At Fraser Hart, we consider ourselves to be the experts when it comes to rings, be it an engagement ring, a wedding ring or eternity ring, and we recognise that finding the perfect fit is both extremely important and difficult.

With that in mind, the table below shows the inside circumference of each ring size. These sizes then correspond with a matching size. Traditionally, the most common sizes for women range between I - Q and for men its usually between R – Z. Please note that this is only a guide and that having your finger measured in any of our 23 nationwide showrooms is the most accurate way to find out your ring size.

RING SIZE	DIAMETER (mm)	CIRCUMFERENCE (mm)
F	14.1	44.2
G	14.5	45.5
H	14.9	46.8
I	15.3	48
J	15.5	48.7
K	15.9	50
L	16.3	51.2
M	16.7	52.5
N	17.1	53.8
0	17.5	55.1
P	17.9	56.3
Q	18.3	57.6
R	18.8	59.5
S	19.2	60.2
T	19.6	61.4
U	20	62.7
V	20.4	64
W	20.8	65.3
X	21.2	66.6
Y	21.4	67.8
Z	21.6	68.5

HOW TO FIND YOUR RING SIZE

Measure at Home

If you don’t know your size, here are two simple ways to measure:

1. Measure an Existing Ring

Choose a ring that fits comfortably on the intended finger.
Use a ruler to measure the inside diameter (the widest part across the centre).
Match your measurement to our size chart above

2. Measure Your Finger

Wrap a thin strip of paper or a piece of string around the base of your finger.
Mark where the ends meet and measure the length in millimetres.
Use the chart above to find your size.

📌 Tips:

Measure at the end of the day when your fingers are at their largest. Avoid measuring when cold, as fingers can shrink slightly.
Measure your finger at least 3 times to ensure the correct size reading.
Rings with wider bands will fit a bit tighter, so you may need to go up a size.

Need Help?

If you're unsure about sizing, visit us in store for a professional fitting or book an virtual or in-store appointment.

Ring Size FAQ's

If you purchase a ring from us and need a different size, we offer free resizing to ensure the perfect fit. Contact our customer service team or visit us in-store for assistance. For more details on resizing options, limitations, and alternatives when resizing isn’t possible, visit our Ring Resizing Guide.

If you're in between sizes, contact our customer service team for assistance in choosing the correct size.

If you cannot take a ring to one of our stores, there are other options to try. Check with their friends and family members if they have ever bought them a ring before and may know their size. If you can access one of their rings, measure the space for the finger with a ruler to get the diameter in mm and compare it to the sizing chart above. You can also use a piece of dental floss / string to encircle the finger space and then measure the floss / string in mm to get the circumference.

Yes, fingers can swell slightly in warmer weather or after physical activity, and they may shrink in colder temperatures. Measure your finger in the evening when it’s at its largest.

Many rings can be resized, but it depends on the design. Plain bands are easier to adjust, while rings with gemstones or intricate details may have limitations. Contact us , to check if resizing is an option for your chosen ring or find out more about resizing options, limitations, and alternatives when resizing isn’t possible, visit our Ring Resizing Guide..

Yes, ring sizes vary globally. Our chart uses UK sizes, but we can help you convert from US, European, or other sizing systems.

Yes, wider rings can feel tighter. If you’re choosing a band with a thicker design, consider going half a size up for a comfortable fit.

Yes! Visit us in-store for assistance., and our experts will help you find the perfect size.