New Layout: Blue = Feet Input (or other imperial) Green = Inches Input (or metric) Turn on Advanced for Area and Volume Calculations Tools: Converter, Triangle, Scale, Circle, Chords / Arcs, Stair Stringers, Board Feet Old Layout: How to use the app: --- The top line is your final result --- The second line shows your current input --- The top panel (with feet selected) is used to input feet --- The bottom panel (with inches selected) is used to input inches --- The fraction column is used to input common fractions. Click x/y to access x/16,x/32, and x/64 fractions --- Input meters, cm, or mm by selecting the corresponding tab. Either panel will work for input --- Calculate a percentage of the final answer using the % tab --- Click Review to review your calculation steps --- Click All Clear (bottom right) to start a new calculation