The thickness of leather is measured in ounces, and each ounce equals 1/64 of an inch. So, a 4 ounce piece of leather would measure approximately 4/64”, or 1/16” thick. To accommodate variations in thickness across a split hide, leather weights are often given in ranges. For example, 6oz-7oz.
A lighter weight leather will be more flexible, while a heavier weight leather will be more durable. Below is a table to help you with the conversion:
| Leather Weight (Oz) | Thickness (mm) |
|---|---|
| 1 | 0.4 |
| 2 | 0.8 |
| 3 | 1.2 |
| 4 | 1.6 |
| 5 | 2 |
| 6 | 2.4 |
| 7 | 2.8 |
| 8 | 3.2 |
| 9 | 3.6 |
| 10 | 4 |