The Chicago Plumbing Code

Inches to Decimal Foot

Tables 11: Inches to Decimal Foot

Table of conversions from inches to decimal feet. This table starts with 1 to 12 inch equivalents in decimals of a foot.

Inch Decimal of a Foot
1 inch 0.0833
2 inches 0.167
3 inches 0.250
4 inches 0.333
5 inches 0.417
6 inches 0.500
7 inches 0.583
8 inches 0.667
9 inches 0.750
10 inches 0.833
11 inches 0.917
12 inches 1.000

To convert further, 1/8" is almost 1/100th of a foot.

For example:

1" = 0.08
1 1/8" = 0.09
1 1/4" = 0.10
1 3/8" = 0.11
1 1/2" = 0.13
1 5/8" = 0.14
1 3/4" = 0.15
1 7/8" = 0.16
2" = 0.17