I've wanted this algorithm for ages and couldn't find it. It's just a simple interval calculator for people like me who can't run for a prolonged period of time but still want to set targets for ...
Tip — Counting Semitones: Each fret on a guitar (or each piano key including black keys) equals exactly 1 semitone. To find the interval, count the total semitones between two notes. 12 semitones ...