4 US ring sizes to Swiss ring sizes
4 US = 6.750668597 CH
A US ring size 4 corresponds to Swiss ring size 7 (6.751 exactly).
4 US ring sizes = 6.750668597 Swiss ring sizes
How to convert 4 US to CH
CH = US × 2.553486509 − 3.463277439
- Take the value: 4 US.
- Multiply by 2.553486509: 4 × 2.553486509 = 10.21394604.
- Subtract 3.463277439: 10.21394604 − 3.463277439 = 6.750668597.
- So 4 US = 6.750668597 CH.
Sizes come in steps of 1, so the nearest Swiss ring size size is 7. Sizes differ between brands and countries by up to half a size or more, so treat conversions as a starting point and check the brand's own chart or have your finger sized by a jeweler.
4 US in other units
| 4 US to EU/ISO | 46.750669 EU/ISO |
| 4 US to mm | 14.8812 mm |
| 4 US to mm circ. | 46.750669 mm circ. |
| 4 US to in | 0.58587402 in |
Nearby US to CH conversions
| 3 US to CH | 4.1971821 CH |
| 3.5 US to CH | 5.4739253 CH |
| 4.5 US to CH | 8.0274119 CH |
| 5 US to CH | 9.3041551 CH |
| 5.5 US to CH | 10.580898 CH |
| 6 US to CH | 11.857642 CH |
| 6.5 US to CH | 13.134385 CH |
| 7 US to CH | 14.411128 CH |
| 7.5 US to CH | 15.687871 CH |
| 8 US to CH | 16.964615 CH |
Reverse conversion
Frequently asked questions
What is 4 US ring sizes in Swiss ring sizes?
4 US ring sizes equals 6.750668597 Swiss ring sizes.