Here's FIK (International Kendo Federation) regulation Shinai size:
| Gender | Jr. High School | High School | College / Adult | ||
| Length | Male & Female | Less than 114cm (size 37) |
Less than 117cm (size 38) |
Less than 120cm (size 39) |
|
| Weight | Male Female |
More than 440g More than 400g |
More than 480g More than 420g |
More than 510g More than 440g |
|
| Tip Diameter | Male Female |
More than 25mm More than 24mm |
More than 26mm More than 25mm |
More than 26mm More than 25mm |
|
Shinai size by age:
| Age | 4-6 | 7-11 | 12-14 | 15-17 | 18+ |
| Shinai Size | 28 | 30/32/34/36 | 37 | 38 | 39 |
