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Ring size chart & conversion guide

Do you know your ring size? Finger sizes vary a lot from one person to the next, so it can be almost impossible to get your ring size right just by guessing. It’s important to check your ring size before buying rings online.

Because you'll want an accurate measurement we highly recommend purchasing one of our very handy ring size kits. Each kit contains a reusable ring sizer belt, a printed copy of our handy ring size measuring and conversion guide and even a discount code to use when you return to shop online for rings for women.

Not only will the ring sizer included in the kit give you peace of mind when buying gold, silver or gemstones rings, you can also reuse it when needed or take measurements for friends and family.

If you already know your ring measurement or need to convert a ring size between different measuring systems, scroll down to our Ring Size Conversion Chart, which includes ring size measurements in mm and inches, plus US, Australian and British ring sizes for both men and women.

How to measure your ring size

If you don't already know your ring size or don't have measurements to use when referring to our ring sizing chart below, then you're in luck.

Because we want to be sure that you get an accurate ring size measurement, we've put together a handy Ring Size Measuring Guide. It includes our top tips for getting an accurate ring size measurement at home, along with different methods for measuring your finger size.

Once you've got your ring size worked out, come back to this page and check the ring size chart below to see your size in mm, inches and both the USA/Asia and Australia/UK ring size systems. You're welcome :)

PS. Find this article handy? Check out some of our other top jewellery articles below. Join our mailing list to get more great jewellery and style related articles. delivered to your in box.

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If you're a creative woman with a unique sense of style check out our rings, along with delightful necklaces, earrings and other jewellery handmade in gold, silver and gemstones. You'll find something to love and we have easy shopping and FREE delivery.

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Ring size conversion chart:

Below is our full Ring Size Chart. It shows ring sizes in both mm and inches, plus internal diameter and external diameter. It also shows conversions between the numerical (USA, Asia) and alphabetical (Australia, UK) ring size measuring systems. The same chart covers ring sizes for both women and men as they both use the same systems of measurement.

(On a phone? Best viewed in landscape)

Inside diameter
(inches)
Inside diameter
(mm)
Inside circ. 
(inches)
Inside circ. 
(mm)
Numerical sizes
(US, Canada, Asia)
Alphabetical sizes
(Australia, UK, etc)
0.458" 11.6 mm 1.438" 36.5 mm 0  
0.466" 11.8 mm 1.463" 37.2 mm 1/4  
0.474" 12 mm 1.488" 37.8 mm 1/2 A
0.482" 12.2 mm 1.513" 38.4 mm 3/4 A 1/2
0.49" 12.4 mm 1.539" 39.1 mm 1 B
0.498" 12.6 mm 1.564" 39.7 mm 1 1/4 B 1/2
0.506" 12.9 mm 1.589" 40.4 mm 1 1/2 C
0.514" 13.1 mm 1.614" 41 mm 1 3/4 C 1/2
0.522" 13.3 mm 1.639" 41.6 mm 2 D
0.53" 13.5 mm 1.664" 42.3 mm 2 1/4 D 1/2
0.538" 13.7 mm 1.689" 42.9 mm 2 1/2 E
0.546" 13.9 mm 1.714" 43.5 mm 2 3/4 E 1/2
0.554" 14.1 mm 1.74" 44.2 mm 3 F
0.562" 14.3 mm 1.765" 44.8 mm 3 1/4 F 1/2
0.57" 14.5 mm 1.79" 45.5 mm 3 1/2 G
0.578" 14.7 mm 1.815" 46.1 mm 3 3/4 G 1/2
0.586" 14.9 mm 1.84" 46.7 mm 4 H
0.594" 15.1 mm 1.865" 47.4 mm 4 1/4 H 1/2
0.602" 15.3 mm 1.89" 48 mm 4 1/2 I
0.61" 15.5 mm 1.915" 48.7 mm 4 3/4 J
0.618" 15.7 mm 1.941" 49.3 mm 5 J 1/2
0.626" 15.9 mm 1.966" 49.9 mm 5 1/4 K
0.634" 16.1 mm 1.991" 50.6 mm 5 1/2 K 1/2
0.642" 16.3 mm 2.016" 51.2 mm 5 3/4 L
0.65" 16.5 mm 2.041" 51.8 mm 6 L 1/2
0.658" 16.7 mm 2.066" 52.5 mm 6 1/4 M
0.666" 16.9 mm 2.091" 53.1 mm 6 1/2 M 1/2
0.674" 17.1 mm 2.116" 53.8 mm 6 3/4 N
0.682" 17.3 mm 2.141" 54.4 mm 7 N 1/2
0.69" 17.5 mm 2.167" 55 mm 7 1/4 O
0.698" 17.7 mm 2.192" 55.7 mm 7 1/2 O 1/2
0.706" 17.9 mm 2.217" 56.3 mm 7 3/4 P
0.714" 18.1 mm 2.242" 56.9 mm 8 P 1/2
0.722" 18.3 mm 2.267" 57.6 mm 8 1/4 Q
0.73" 18.5 mm 2.292" 58.2 mm 8 1/2 Q 1/2
0.738" 18.7 mm 2.317" 58.9 mm 8 3/4 R
0.746" 18.9 mm 2.342" 59.5 mm 9 R 1/2
0.754" 19.2 mm 2.368" 60.1 mm 9 1/4 S
0.762" 19.4 mm 2.393" 60.8 mm 9 1/2 S 1/2
0.77" 19.6 mm 2.418" 61.4 mm 9 3/4 T
0.778" 19.8 mm 2.443" 62.1 mm 10 T 1/2
0.786" 20 mm 2.468" 62.7 mm 10 1/4 U
0.794" 20.2 mm 2.493" 63.3 mm 10 1/2 U 1/2
0.802" 20.4 mm 2.518" 64 mm 10 3/4 V
0.81" 20.6 mm 2.543" 64.6 mm 11 V 1/2
0.818" 20.8 mm 2.569" 65.2 mm 11 1/4 W
0.826" 21 mm 2.594" 65.9 mm 11 1/2 W 1/2
0.834" 21.2 mm 2.619" 66.5 mm 11 3/4 X
0.842" 21.4 mm 2.644" 67.2 mm 12 X 1/2
0.85" 21.6 mm 2.669" 67.8 mm 12 1/4 Y
0.858" 21.8 mm 2.694" 68.4 mm 12 1/2 Z
0.866" 22 mm 2.719" 69.1 mm 12 3/4 Z 1/2
0.874" 22.2 mm 2.744" 69.7 mm 13  
0.882" 22.4 mm 2.769" 70.3 mm 13 1/4 Z1
0.89" 22.6 mm 2.795" 71 mm 13 1/2  
0.898" 22.8 mm 2.82" 71.6 mm 13 3/4 Z2
0.906" 23 mm 2.845" 72.3 mm 14 Z3
0.914" 23.2 mm 2.87" 72.9 mm 14 1/4  
0.922" 23.4 mm 2.895" 73.5 mm 14 1/2 Z4
0.93" 23.6 mm 2.92" 74.2 mm 14 3/4  
0.938" 23.8 mm 2.945" 74.8 mm 15  
0.946" 24 mm 2.97" 75.4 mm 15 1/4  
0.954" 24.2 mm 2.996" 76.1 mm 15 1/2  
0.962" 24.4 mm 3.021" 76.7 mm 15 3/4  
0.97" 24.6 mm 3.046" 77.4 mm 16