Calculator for subtracting feet, inches, and carpenter fractions from each other. This free and easy tool is fast and has automatic results.

## Subtraction Calculator in Feet, Inches, and Carpenter Fractions

In the field “Value 1” select the number box below the label “Feet” if the number is large enough to have feet involved. Next, do the same for the number box below the label “Inches”. This number does not have to stop at twelve; feet can be entered as inches here. For example: 16′ 5″ may be entered as 197″. Finally, in the drop down associated with fractions, select a carpenter fraction if there is one involved. Repeat the algorithm for the field marked “Value 2”.