Running Speed Calculator

Calculate your average running speed from a distance and a finish time, shown as km/h and mph, plus your pace per kilometre and per mile.

Enter the distance you ran and your finish time (hours, minutes, seconds) to get your average speed in km/h and mph and your pace per kilometre and per mile. Pace is shown in decimal minutes (5.5 = 5 minutes 30 seconds).

Total time
Average speed
Speed (mph)
Pace (min/km)
Pace (min/mi)

A running speed calculator converts your finish time over a known distance into average speed and pace — the numbers runners and coaches use to set targets and track progress.

The maths

  • Speed = distance / time
  • Pace = time / distance
  • 1 mile = 1.60934 km

Pace is shown in decimal minutes: 5.5 means 5 min 30 sec. Multiply the decimal part by 60 for seconds.

Examples

  • 10 km in 55:00 = 10.9 km/h, 5:30/km
  • 5 km in 25:00 = 12 km/h, 5:00/km
  • Lower pace = faster; higher speed = faster

Frequently asked questions

How do I read a decimal pace?

The whole number is minutes; multiply the decimal by 60 for seconds. 5.5 = 5 min 30 sec per km.

Why two units?

Pace (min/km) is what runners track during a run. Speed (km/h) is easier to compare across activities like cycling and is how treadmills report effort.

Just for the giggles, much love.
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