There are plenty of fractional calculators on the web, but they're designed for kids doing their math homework.

This is a calculator for builders, designed to work with feet, inches, and fractions down to 1/16". To get started, you may want to read the quick tutorial.


' and / " Inches:

Inches: ' / "


Add: ' and / " + ' and / " ' / "

Subtract: ' and / " - ' and / " ' / "

Multiply: ' and / " * ' / "

Divide: ' and / " ÷ ' / "


Angle calculator. Fill in two of the four fields (say, A and B) and it will calculate the other two.

A=adjacent, B=opposite, C=hypotenuse

A: ' and / " ("run")

B: ' and / " ("rise")

C: ' and / " ("hypotenuse")

Angle: °

Warning: I threw together this page really quickly to make a few calculations. It's possible that it may contain errors. Don't blame me if you cut something to the wrong size. However I accept feedback at fractioncalc (at) rickk [please don't send me spam] .com. The calculator is entirely written in HTML and Javascript so if you have any improvements feel free view source and submit your suggestions.

And I also want to point out that this would not even be necessary if we measured things using the metric system like everyone else in the world!

Copyright 2010 Rick Kaseguma. All rights reserved.