Collar (cm) to Collar (in) size
The short answer
By the formula, Collar (cm) 42 is Collar (in) 16.5.
42 cm is 16.54 in. Collars are sold in half inches, so a size between two halves is shown as both.
| Collar (cm) | Collar (in) |
|---|---|
| 36 | 14 |
| 37 | 14.5 |
| 38 | 15 |
| 39 | 15.5 |
| 40 | 15.5 to 16 |
| 41 | 16 |
| 42 | 16.5 |
| 43 | 17 |
| 44 | 17.5 |
| 45 | 17.5 to 18 |
| 46 | 18 |
| 47 | 18.5 |