Feet and Inches Calculator
Simplify construction measurements by performing math directly on feet and inches. No more converting back and forth to decimals in your head.
How do I add feet and inches?
To add feet and inches, add the inches first. If the total inches are 12 or more, divide by 12. Add the quotient to the feet and keep the remainder as the final inches. For example, 5' 8" + 2' 6" = 7' 14", which simplifies to 8' 2".
What is the symbol for feet and inches?
The single prime (') is the symbol for feet, and the double prime (") is the symbol for inches. For example, 6 feet 2 inches is written as 6' 2".
How do I convert inches to a decimal foot?
Divide the number of inches by 12. For example, 6 inches is 0.5 feet (6 / 12 = 0.5).
Why is this calculator useful for construction?
Construction measurements are often given in feet and inches. Calculating offsets, total lengths, or area requires performing arithmetic on these mixed units, which can be prone to errors when done manually.