Running Pace Calculator
Convert between running pace (min/km or min/mi), speed (km/h or mph), and race finish time — free, instant, for any distance.
Whether you're training for a 5K or a marathon, understanding the relationship between pace, speed, and finish time is essential. Our free running pace calculator lets you convert instantly between pace (minutes per kilometer or per mile), speed (km/h or mph), and finish time for any distance. Enter one value and get all the others — plus per-kilometer splits and projected times for common race distances (5K, 10K, half marathon, marathon). Useful for planning race strategy, setting training targets, or comparing performances across distances.
Calculate Pace & Speed
Enter your pace in min:sec per km to calculate speed and finish time.
Format: minutes:seconds per kilometer (e.g. 5:30 = 5 min 30 sec per km).