Interesting idea, particularly the prompting for uknown quantities, but GNU units already does a pretty good job of this. https://en.wikipedia.org/wiki/GNU_Uni

Interesting idea, particularly the prompting for uknown quantities, but GNU units already does a pretty good job of this. https://en.wikipedia.org/wiki/GNU_Units https://en.wikipedia.org/wiki/GNU_Units Calculations aren't quite as short as "1mA 3K", but pretty close to it. You have: 1mA 3kohm You want: V * 3 / 0.33333333 It has long and short SI prefixes, scientific notation, implicit multiplication, and a history dating back to Unix itself. By the way, one of the example calculations (calculation of 205 Hz) is too high by a factor 10. You have: 1 / (2 pi 0.5microF sqrt(11kohm 22kohm)) You want: Hz * 20.461734 / 0.048871712