21 mm to US Ring Size
Convert 21 mm (mm) to us (US) with formulas and conversion tables.
mm
US
21 mm (mm) = 11.2484993998 us (US)
Round to:
Step-by-Step Solution
1Write the conversion factor:
1 inner diameter (mm) = 1 us
2Multiply the value by the conversion factor:
21 × 1 = 11.2484993998
3Result:
21 mm (mm) = 11.2484993998 us (US)
mm to US Conversion Table
| mm | US |
|---|---|
| 1 mm | -12.7611 US |
| 2 mm | -11.5606 US |
| 5 mm | -7.95918 US |
| 10 mm | -1.95678 US |
| 20 mm | 10.048 US |
| 21 mm | 11.2485 US |
| 50 mm | 46.0624 US |
| 100 mm | 106.086 US |
21 mm in Other Units
| Unit | 21 mm = |
|---|---|
| mm to US Ring Size | 11.2484993998 US |
| Inner Diameter (mm) to UK/Australia | 21.575 UK |
| Inner Diameter (mm) to EU/France | 65.9734457254 EU |
| Inner Diameter (mm) to Circumference (mm) | 65.9734457254 mm |