US Size to Japan Size Calculator
Transform US Size measurements to Japan Size with our powerful conversion tool. Instant calculations, detailed charts, and accurate results. Try it now for f...
Ring Size Calculator
Convert between different ring size units instantly with precise calculations
Ring Size Conversion Chart
| US | UK | EU | Japan |
|---|---|---|---|
| 3 | F | 44 | 1 |
| 3.25 | F½ | 44.5 | 2 |
| 3.5 | G | 45 | 3 |
| 3.75 | G½ | 45.5 | 4 |
| 4 | H | 46 | 5 |
| 4.25 | H½ | 46.5 | 6 |
| 4.5 | I | 47 | 7 |
| 4.75 | I½ | 47.5 | 8 |
| 5 | J | 48 | 9 |
| 5.25 | J½ | 48.5 | 10 |
| 5.5 | K | 49 | 11 |
| 5.75 | K½ | 49.5 | 12 |
| 6 | L | 50 | 13 |
| 6.25 | L½ | 50.5 | 14 |
| 6.5 | M | 51 | 15 |
| 6.75 | M½ | 51.5 | 16 |
| 7 | N | 52 | 17 |
| 7.25 | N½ | 52.5 | 18 |
| 7.5 | O | 53 | 19 |
| 7.75 | O½ | 53.5 | 20 |
| 8 | P | 54 | 21 |
| 8.25 | P½ | 54.5 | 22 |
| 8.5 | Q | 55 | 23 |
| 8.75 | Q½ | 55.5 | 24 |
| 9 | R | 56 | 25 |
| 9.25 | R½ | 56.5 | 26 |
| 9.5 | S | 57 | 27 |
| 9.75 | S½ | 57.5 | 28 |
| 10 | T | 58 | 29 |
| 10.25 | T½ | 58.5 | 30 |
| 10.5 | U | 59 | 31 |
| 10.75 | U½ | 59.5 | 32 |
| 11 | V | 60 | 33 |
| 11.25 | V½ | 60.5 | 34 |
| 11.5 | W | 61 | 35 |
| 11.75 | W½ | 61.5 | 36 |
| 12 | X | 62 | 37 |
About This Conversion
Written by: Andrew Smith
Converting between US Size and Japan Size is a common requirement in many fields including engineering, science, and daily life applications.
Conversion Methods
There are several methods to convert between US Size and Japan Size, each with its own advantages.
Lookup Table Method
Ring size conversions use internationally recognized sizing standards that correlate to finger circumference measurements.
Step-by-Step Process
- Find your current size in US Size
- Use the conversion chart to locate the corresponding Japan Size
- Verify the converted size matches your measurements
- Consider trying on items when possible for the best fit
Practical Applications
Converting between US Size and Japan Size is essential in numerous real-world scenarios.