FAQLeather thickness table Login
Leather thickness is normally defined in ounces - (i.e., how many ounces does one square foot weigh, aprox.)
One ounce equals 0.4mm (1/64") in thickness.

The thickness of leather varies to some extent throughout the hide. This is why leathers are usually shown with a range of thickness such as 4 to 5 oz., or 6 to 7 oz.

Ounce
Milimeter
Inch
1
0.4
1/64"
2
0.8
1/32"
3
1.2
3/64"
4
1.6
1/16"
5
2
5/64"
6
2.4
3/32"
7
2.8
7/64"
8
3.2
1/8"
9
3.6
9/64"
10
4
5/32"
11
4.4
11/64"
12
4.8
3/16"
13
5.2
13/64"
14
5.6
7/32"
15
6
15/64"
16
6.4
1/4"
17
6.8
17/64"
18
7.2
9/32"
19
7.6
19/64"
20
8
5/16"