Pace to Speed Calculator

About this calculator

This calculator converts running pace to speed using the reciprocal relationship speed = 60 / pace, where pace is entered in minutes per kilometer and speed comes out in km/h (with an mph conversion alongside). Because pace measures time per unit distance and speed measures distance per unit time, the two are inverses of each other, which is why a small change in pace near fast paces translates into a bigger jump in speed than the same change at slow paces.

Runners use this conversion to translate a GPS watch's pace reading into a treadmill speed setting, to convert race split times into a target treadmill pace, and to compare training paces against speed-based training plans. Coaches setting interval workouts on a treadmill, where speed rather than pace is the input, rely on the same formula to hit a specific target time.