Conversion · Switzerland to Europe

Swiss to EU / ISO 8653 ring sizes.

Swiss 14 = EU / ISO 8653 54 17.19 mm across · 54.0 mm around

Both scales describe the same physical ring. The EU size is simply the inner circumference in millimetres, so the conversion is the measurement itself.

Swiss	EU / ISO 8653	Diameter	Circumference
0	outside range	12.73 mm	40.0 mm
1	outside range	13.05 mm	41.0 mm
2	outside range	13.37 mm	42.0 mm
3	outside range	13.69 mm	43.0 mm
4	44	14.01 mm	44.0 mm
5	45	14.32 mm	45.0 mm
6	46	14.64 mm	46.0 mm
7	47	14.96 mm	47.0 mm
8	48	15.28 mm	48.0 mm
9	49	15.60 mm	49.0 mm
10	50	15.92 mm	50.0 mm
11	51	16.23 mm	51.0 mm
12	52	16.55 mm	52.0 mm
13	53	16.87 mm	53.0 mm
14	54	17.19 mm	54.0 mm
15	55	17.51 mm	55.0 mm
16	56	17.83 mm	56.0 mm
17	57	18.14 mm	57.0 mm
18	58	18.46 mm	58.0 mm
19	59	18.78 mm	59.0 mm
20	60	19.10 mm	60.0 mm
21	61	19.42 mm	61.0 mm
22	62	19.74 mm	62.0 mm
23	63	20.05 mm	63.0 mm
24	64	20.37 mm	64.0 mm
25	65	20.69 mm	65.0 mm
26	66	21.01 mm	66.0 mm
27	67	21.33 mm	67.0 mm

Measure in the evening — fingers swell through the day and in heat — and let your jeweller's own chart take precedence over this one. How to measure at home →