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Ring Sizing

See our handy ring sizing conversion chart below.

If you are unsure, our staff are more than happy to measure your ring size in store using a professional ring sizing tool.

Diagram showing that diameter is the width of the ring and circumference is the length around it
Inside diameterInside circumferenceSizing systems
mmmmUnited Kingdom
Ireland
Australia
South Africa
New Zealand
United States
Canada
Mexico
China
Japan
South Korea
South America
Italy
Spain
Netherlands
Switzerland
11.6336.5 0  
11.8437.2 ¼  
12.0437.8A½  
12.2438.5¾  
12.4539.1B11 
12.6539.7  
12.8540.4C 0.5
13.0641 1
13.2641.7D221.75
13.4642.3 2.25
13.6742.9E33
13.8743.6 3.5
14.0744.2F344.25
14.2744.854.75
14.4845.5G 5.5
14.6846.166
14.8846.8H476.75
15.0947.4 7.5
15.2948I88
15.4948.7J 8.75
15.749.3599.25
15.950K 10
16.150.61010.5
16.3151.2L 11.25
16.5151.961111.75
16.7152.5M1212.5
16.9253.11313.25
17.1253.8N 13.75
17.3254.471414.5
17.5355.1O 15
17.7355.71515.75
17.9356.3P 16.25
18.145781617
18.3457.6Q 17.5
18.5458.31718.25
18.7558.9R 19
18.9559.591819.5
19.1560.2S 20.25
19.3560.81920.75
19.5661.4T 21.5
19.7662.1102022
19.9662.7U10¼2122.75
20.1763.410½2223.25
20.3764V10¾ 24
20.5764.6112324.75
20.7865.3W11¼ 25.25
20.9865.911½2426
21.1866.6X11¾ 26.5
21.3967.2122527.25
21.5967.8Y12¼ 27.75
21.7968.5Z12½2628.5
2269.112¾ 29
22.269.7 132729.75
22.470.4Z113¼ 30.5
22.6171 13½ 31
22.8171.7Z213¾ 31.75
23.0172.3Z314 32.25
23.2272.9 14¼ 33
23.4273.6Z414½ 33.5
23.6274.2 14¾ 34.25
23.8374.8 15 34.75
24.0375.5 15¼ 35.5
24.2376.1 15½ 36.25
24.4376.8 15¾ 36.75
24.6477.4 16 37.5

Oclee & Son © 2022

01303 252654

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35 Sandgate Road, Folkestone, Kent, CT20 1SB