# You do know emacs can do that?

Recently I needed to convert hours, minutes and seconds into just seconds. The data I had was something like `3h 14min 40sec`

. I’ve recently been trying to wean myself off python as my primary calculator and been learning emacs *calc*.

So I fired up `M-x calc`

and started putting in `3 RET 60 * 60 *`

blah blah, when a little corner in my brain suddenly remembered reading about units in calc.

A quick `C-h i m calc RET`

and a little bit of reading about units and I went back to calc.

In the calc buffer pressing `'`

will enter *algebraic input mode* here we can not only enter algebraic expressions (and find the value of variables in equations, but that’s for another post..) and units. Just enter `3hr+14min+40sec RET`

and the press `u b`

(which converts to the base unit) and the answer of `11680 s`

will be there faster than you can say emacs rocks.

Another lesson confirmed: emacs is the original “there is an app for that”.

Now I only need to figure out how to get those 10 mins I spent reading back…