Ring Size Guide

Measure an existing ring

Measure your finger

There are several ring size systems used worldwide. At The Love Diamond, we use the Hong Kong measurement system. Below, you’ll find a table that converts various ring sizes into the Hong Kong system.

CIRCUMFERENCE (MM) DIAMETER (MM) HONG KONG MAINLAND CHINA UNITED STATES & CANADA JAPAN TAIWAN
43.3
13.8

5

3.0
2.75
3
44.3
14.1

6

4
3
4
6
45.5
14.5

7

5.5
3.5
5
6.5
46.5
14.8

8

6.5
3.75
6
7.5
47.7
15.2

9

8
4.25
7
8.25
48.7
15.5

10

9
4.75
8
8.75
49.9
15.9

11

10
5.25
9
9.25
50.9
16.2

12

11
5.5
10
10.25
52.1
16.6

13

12
6
11
11
53.1
16.9

14

13
6.5
12
11.75
54.3
17.3

15

14
7
13.5
12.5
55.6
17.7

16

15.5
7.5
14.5
13.25
56.5
18.0

17

16.5
7.75
15.5
14
57.5
18.3

18

17.5
8.25
16.5
14.5
58.7
18.7

19

19
8.75
17.5
15.25
59.7
19

20

20
9
18.5
16
60.9
19.4

21

21
9.5
19.5
16.5
61.9
19.7

22

22
10
20.5
17.25
63.1
20.1

23

23
10.25
22
18
64.1
20.4

24

24
10.75
23
18.5
65.3
20.8

25

25
11.25
24
19.25
66.3
21.1

26

26
11.5
25
20
67.5
21.5

27

27.5
12
26
20.75
68.5
21.8

28

28.5
12.5
27
21.25
69.7
22.2

29

30
12.75
28
22
70.7
22.5

30

31
13.25
23

Best Practice

Cold weather can cause your fingers to shrink by up to half a size, while hot weather can lead to swelling. To get an accurate measurement, ensure your fingers are at a comfortable, neutral temperature.

Get In Touch

Whether you’re treating yourself, finding a gift for someone special, searching for the perfect engagement ring, or simply seeking advice, our team of jewellery experts is here to help! We’d be delighted to welcome you into our boutiques or arrange a chat over phone or WhatsApp.