min : sec per unit
h : m : s
Formulas
Time = Pace x Distance. Pace = Time / Distance. Distance = Time / Pace. Speed = 60 / Pace. Estimated calories burned assume approximately 100 calories per mile for a 150-lb person (a common rule of thumb; actual burn varies significantly with body weight, terrain, and fitness level).
Frequently Asked Questions
Running pace is the time it takes to cover one unit of distance, typically expressed as minutes per mile or minutes per kilometer. For example, a pace of 9:00/mile means it takes 9 minutes to run one mile. Pace is the inverse of speed: a faster runner has a lower pace number.
Finish time = pace x distance. For example, running a 5K (3.11 miles) at 9:00/mile: 9 x 3.11 = 27 minutes 59 seconds. For longer races, account for fatigue and pace variation in later miles.
Beginner runners typically start at 10-14 minutes per mile (6:15-8:42 per km). A comfortable conversational pace where you can speak in full sentences is a good target for aerobic base building. Average recreational runners typically run 9-12 minutes per mile.
Speed (mph) = 60 / pace (min/mile). For example, 9:00/mile = 60/9 = 6.67 mph. Speed (km/h) = 60 / pace (min/km). For example, 5:36/km = 60/5.6 = 10.71 km/h.
Standard race distances: 5K = 3.107 miles, 10K = 6.214 miles, half marathon = 13.109 miles (21.097 km), marathon = 26.219 miles (42.195 km). This calculator has quick-select buttons for these distances.
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