How to Measure Your Ring Size
AUMIRE JEWEL · RING SIZE GUIDE
How to Measure Your Ring Size
Find your perfect fit at home — three easy methods, no jeweler required.
Three Easy Methods
Method 1 — String or Paper Strip
Wrap a strip of paper or a piece of string snugly around the base of your finger. Mark where it overlaps, then lay it flat and read the length in millimetres against a ruler — that is your finger circumference.
Method 2 — An Existing Ring
Take a ring you already own that fits the intended finger. Measure its inner diameter — edge to edge, straight across the centre — in millimetres, then match it to the chart below.
Method 3 — Printable Ring Sizer
Print our ring sizer at 100% scale, cut out the strip, and wrap it around your finger. The number that lines up at the arrow is your size. Tip: never use ‘fit to page’, or the scale will be wrong.
Tip: measure at the end of the day, when fingers are warmest — and if you are between sizes, always size up.
Ring Size Conversion Chart
US and EU sizes with exact circumference and inner diameter.
|
US Size |
EU Size |
Circumference (mm) |
Diameter (mm) |
|
3 |
44 |
44.2 |
14.1 |
|
3.5 |
45 |
45.5 |
14.5 |
|
4 |
47 |
46.8 |
14.9 |
|
4.5 |
48 |
48.0 |
15.3 |
|
5 |
49 |
49.3 |
15.7 |
|
5.5 |
51 |
50.6 |
16.1 |
|
6 |
52 |
51.9 |
16.5 |
|
6.5 |
53 |
53.1 |
16.9 |
|
7 |
54 |
54.4 |
17.3 |
|
7.5 |
56 |
55.7 |
17.7 |
|
8 |
57 |
57.0 |
18.1 |
|
8.5 |
58 |
58.3 |
18.5 |
|
9 |
59 |
59.5 |
18.9 |
|
9.5 |
61 |
60.8 |
19.4 |
|
10 |
62 |
62.1 |
19.8 |
|
10.5 |
63 |
63.4 |
20.2 |
|
11 |
65 |
64.6 |
20.6 |
|
11.5 |
66 |
65.9 |
21.0 |
|
12 |
67 |
67.2 |
21.4 |
|
12.5 |
68 |
68.5 |
21.8 |
|
13 |
70 |
69.7 |
22.2 |
EU size ≈ inner circumference in millimetres. Between sizes? Choose the larger one.