Ring Size Guide

Use the chart below to compare Hong Kong ring sizes with US and international sizing systems.

Ring Size Conversion Chart

ffulla ring sizes are converted from Hong Kong ring sizes using inner circumference measurements. For the most accurate result, have the finger on which you plan to wear the ring measured by a professional jeweler.

Finger size can vary by hand, temperature and band width. If you are between sizes or choosing a wider band, contact ffulla before ordering.

Swipe to view more countries

Inside Circumference US, Canada, Mexico UK, Australia, Ireland, New Zealand, South Africa France Germany, Russia, Ukraine, Asia Hong Kong, China India, China mainland, Japan, South America, Turkey, Israel Italy, Spain, Netherlands, Switzerland
IN MM
1.78 45.2 3.5 G 45.5 14 1/2 7 5 5 1/4
1.81 45.9 3.75 G 1/2 46 14 3/4 7.5 6 5 7/8
1.83 46.5 4 H 47 15 8 7 6 1/2
1.85 47.1 4.25 H 1/2 47.5 — 8.5 — 7 1/8
1.88 47.7 4.5 I 48 15 1/4 9 8 7 3/4
1.90 48.2 4.5 I 48 15 1/4 9.5 8 7 3/4
1.92 48.7 4.75 J 48.5 15 1/2 10 — 8 3/8
1.94 49.3 5 J 1/2 49 15 3/4 10.5 9 9
1.96 49.9 5.25 K 50 16 11 — 9 5/8
1.98 50.4 5.5 K 1/2 50.5 16 1/4 11.5 10 10 1/4
2.00 50.9 5.75 L 51 — 12 11 10 7/8
2.03 51.5 5.75 L 51 — 12.5 11 10 7/8
2.05 52.1 6 L 1/2 52 16 1/2 13 12 11 1/2
2.08 52.8 6.25 M 52.5 16 3/4 13.5 — 12 1/8
2.10 53.4 6.5 M 1/2 53 17 14 13 12 3/4
2.12 53.9 6.75 N 54 — 14.5 — 13 3/8
2.14 54.3 7 N 1/2 54.5 17 1/4 15 14 14
2.16 54.8 7.25 O 55 17 1/2 15.5 — 14 5/8
2.18 55.3 7.25 O 55 17 1/2 16 — 14 5/8
2.20 55.9 7.5 O 1/2 56 17 3/4 16.5 15 15 1/4
2.22 56.5 7.75 P 56.5 18 17 — 15 7/8
2.25 57.2 8 P 1/2 57 — 17.5 16 16 1/2
2.28 57.8 8.25 Q 58 18 1/4 18 — 17 1/8
2.30 58.3 8.5 Q 1/2 58.5 18 1/2 18.5 17 17 3/4
2.31 58.7 8.75 R 59 18 3/4 19 — 18 3/8
2.33 59.3 9 R 1/2 60 19 19.5 18 19
2.36 59.9 9.25 S 60.5 19 1/4 20 — 19 5/8

Measurements are approximate and converted from Hong Kong ring sizes based on inner circumference. If you are between sizes, we recommend choosing the larger size.

“—” means there is no direct equivalent listed for that international sizing system.