Standard & Custom Sizes

Updated at 2026-05-11


Finding Your Ring Size

Getting your ring size right is the most important step before ordering. NineTwoFive uses its own sizing system, so if you already know your UK or US size, use the chart below to find your NineTwoFive equivalent.

Please keep in mind that ring size charts can vary between brands, countries, and measurement systems. For example, a UK size you know from another jeweller may not always match the UK conversion shown in our chart exactly. That is why we always recommend checking your finger circumference in millimeters to make sure you choose the correct size.

For the most accurate result, measure your finger circumference in mm using a soft tape measure or a strip of paper. Match that measurement to the chart below. Our sizes are designed to fit the finger circumferences listed in our own size chart.

If your size falls outside our standard size range, don’t worry β€” we can usually still make it for you. Simply select CUSTOM on the product page, enter your exact inside circumference in mm in the field provided, and we’ll craft it to your measurements.

Please note that custom pieces are made separately in Bali and typically take 8–10 weeks to produce.

Finger circumference UK US Reccomended size
46.02 H 3 3/4 CUSTOM
46.68 H 1/2 4 CUSTOM
47.25 I 4 1/4 CUSTOM
47.97 I 1/2 4 1/2 CUSTOM
48.38 J 4 5/8 CUSTOM
48.79 J 1/4 4 3/4 CUSTOM
49.32 J 1/2 5 CUSTOM
49.64 K 5 1/8 CUSTOM
49.95 K 1/4 5 1/4 CUSTOM
50.27 K 1/2 5 3/8 CUSTOM
50.58 L 5 1/2 CUSTOM
51.21 L 1/4 5 3/4 CUSTOM
51.55 L 1/2 5 7/8 CUSTOM
51.87 M 6 CUSTOM
52.5 M 1/2 6 1/4 CUSTOM
53.16 N 6 1/2 CUSTOM
53.82 N 1/2 6 3/4 XXS
54.51 O 7 XXS
54.82 O 1/2 7 1/4 XXS
55.76 P 7 1/2 CUSTOM
56.45 P 1/2 7 3/4 XS
57.15 Q 8 XS
57.65 Q 1/2 8 1/4 CUSTOM
58.21 Q 3/4 8 1/2 CUSTOM
58.47 R 8 5/8 CUSTOM
58.72 R 1/4 8 3/4 CUSTOM
59.06 R 1/2 8 7/8 S
59.34 R 3/4 9 S
60 S 9 1/8 CUSTOM
60.38 S 1/4 9 1/4 CUSTOM
60.66 S 1/2 9 3/8 CUSTOM
60.98 S 3/4 9 1/2 CUSTOM
61.29 T 9 5/8 CUSTOM
61.64 T 1/4 9 3/4 M
62.33 T 1/2 10 M
62.89 U 10 1/4 CUSTOM
63.46 U 1/2 10 1/2 CUSTOM
63.84 V 10 5/8 CUSTOM
64.21 V 1/4 10 3/4 L
64.97 V 1/2 11 L
65.22 W 11 1/8 L
65.5 W 1/4 11 1/4 CUSTOM
65.78 W 1/2 11 3/8 CUSTOM
66.22 W 3/4 11 1/2 CUSTOM
66.54 X 11 5/8 CUSTOM
66.73 X 1/4 11 3/4 CUSTOM
66.92 X 1/2 11 7/8 CUSTOM
67.51 Y 12 XL
68.14 Y 1/2 12 1/4 XL
68.77 Z 12 1/2 CUSTOM
69.43 Z +1/2 12 3/4 XXL
70.15 Z+1 13 XXL
71 Z+1.5 13.5 CUSTOM
71.28 Z+2 - XXXL
72 Z+2.5 14 XXXL
72.45 Z+3 - CUSTOM
73.01 Z+3.5 - CUSTOM
73.73 Z+4 - CUSTOM
73.98 Z+4.5 - CUSTOM
74.99 Z+5 - CUSTOM
76.25 Z+6 - CUSTOM