FR to Waist size jeans size
The short answer
By the formula, FR 42 is Waist size 30.
No brand chart we have checked prints both systems, so this table is the arithmetic alone. Treat it as the label convention, not a fit.
| FR | Waist size |
|---|---|
| 32 | 25 |
| 34 | 26 |
| 36 | 27 |
| 38 | 28 |
| 40 | 29 |
| 42 | 30 |
| 44 | 31 |
| 46 | 32 |
| 48 | 33 |
| 50 | 34 |
| 52 | 35 |