Originally Posted by
caloso
Exactly. A walking or running step is not equivalent to a pedal revolution because the bike holds up your weight. That's why I suggested using a heart rate monitor earlier.
We don't actually know what the goal here is. I'd guess it's to be able to substitute cycling for walking (a reasonable thing to want to do). Using 13.3 steps/mph for average speeds over 15 mph is a simple and cheap way to to that.
There isn't that much meaning or value to the "steps" equivalences. A single number for one activity doesn't make any real sense.
I'd suggest not spending too much effort polishing the turd.