Running Pace Calculator

Calculate running pace, time or distance for any run or race.

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How it works

Pace is simply time divided by distance. Enter any two of pace, time, and distance and the tool solves for the third. It shows pace in both minutes per kilometre and minutes per mile, and handles common race distances (5K, 10K, half and full marathon) as one-tap presets. Useful for planning a goal finish time or checking what pace you need to hold. The arithmetic runs entirely in your browser — no account, no tracking of your training data.


              pace = time / distance
time = pace × distance

Common use cases

  • Finding the pace needed to hit a goal marathon finish time.
  • Converting a treadmill speed into minutes per mile.
  • Estimating your finish time for a 10K at your usual pace.

Frequently asked questions

Can it convert between km and miles?

Yes. Whatever you enter, the result shows pace in both minutes per kilometre and minutes per mile, so you can train in either unit.

Does it have race-distance presets?

Yes. One tap fills in 5K, 10K, half marathon (21.0975 km), or full marathon (42.195 km) so you only need to add your time or target pace.

How do I enter time?

Enter hours, minutes, and seconds. The calculator combines them, so a 25-minute 5K or a 3-hour-45-minute marathon both work.