Feet and inches calculator

Add, subtract, multiply and divide feet, inches and fractions.

  • Free, no sign-up
  • Runs in your browser
How it is calculated

All values are turned into inches (1 ft = 12 in), calculated, then shown as feet, inches and the nearest fraction you choose. Metric: 1 in = 25.4 mm.

Questions

How do I type a dimension?

Like 12' 6 1/2" or 12-6 1/2 or 150.5". Feet use ' and inches use ".

Is anything I enter saved or sent?

No. The calculation runs in your browser. Nothing you type is sent anywhere. You can copy the result, print it or download it as a CSV.