Pace percentage calculator

Serverless Javascript app to calculate percentages of race pace for Renato Canova-style interval workouts for runners. Features:

• Can operate in "forward mode" (i.e. what is 85% of 5:12 mile pace?) and "reverse mode" (3:15/km is 90% of what pace?).
• Also includes a unit conversion engine to convert paces to and from /mi, /km, and /400m splits.
• Can calculate both percent of pace (default) and percentages of speed - see this article for relevant differences.
  • Renato Canova uses percent of pace, and I do too.
• App page has detailed instructions on typical use cases and some suggested workouts.

Find the app here!