Vintage trousers sit at the natural waist, which is 1–3 inches higher than modern jeans. This converter accounts for that shift and maps sizes across all major standards.
| EU | US Waist | UK Waist | USSR/RU | Waist cm | Inseam cm |
|---|---|---|---|---|---|
| 38 | 28" | 28" | 44 | 71 | 76 |
| 40 | 30" | 30" | 48 | 76 | 78 |
| 42 | 32" | 32" | 52 | 81 | 79 |
| 44 | 34" | 34" | 54 | 86 | 80 |
| 46 | 36" | 36" | 56 | 91 | 81 |
| 48 | 38" | 38" | 58 | 97 | 82 |
| 50 | 40" | 40" | 60 | 102 | 82 |
| 52 | 42" | 42" | 62 | 107 | 83 |
| 54 | 44" | 44" | 64 | 112 | 83 |
| 56 | 46" | 46" | 66 | 117 | 84 |
Natural Waist vs Hip Waist
Vintage trousers from the 1940s–1970s measure from the natural waist (at the navel). A 1960s size labelled waist 32" may sit 2–3 inches higher than modern jeans with a 32" tag, creating a very different fit.