Running Pace Calculator
Choose a distance, enter your time and we give you your pace per kilometre and per mile.
This calculator gives general estimates for information only. It is not medical advice and does not replace a consultation with a doctor or other qualified health professional.
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The formula
Pace = total time / distance. Speed (km/h) = distance / hours.
Working out your pace
Divide your finish time by the distance. A 5K in 25 minutes is 25 / 5 = 5:00 per kilometre, which is about 8:03 per mile.
Common pace targets
| 5K time | Pace per km | Pace per mile |
|---|---|---|
| 20:00 | 4:00 | 6:26 |
| 25:00 | 5:00 | 8:03 |
| 30:00 | 6:00 | 9:39 |
| 35:00 | 7:00 | 11:16 |
Using it for training
Most of your runs should be at an easy, conversational pace, about a minute or more slower than your 5K race pace. Use the calculator to set the pace for a goal race, then check that your training runs are slower than it.
Examples to check
Type these into the calculator above to see how it behaves. Every result below was produced by the same calculator code that runs on this page.
| What you enter | What you get |
|---|---|
| 5 km; Finish time (h:mm:ss): 0:25:00 | Pace per kilometre: 5:00 /km; Pace per mile: 8:03 /mi |
| 10 km; Finish time (h:mm:ss): 0:55:00 | Pace per kilometre: 5:30 /km; Pace per mile: 8:51 /mi |
| Half marathon (21.0975 km); Finish time (h:mm:ss): 1:50:00 | Pace per kilometre: 5:13 /km; Pace per mile: 8:23 /mi |
Running Pace Calculator: frequently asked questions
What is pace and how is it different from speed?
Pace is the time it takes to cover a distance, such as minutes per kilometre. Speed is distance over time, such as kilometres per hour. Runners tend to use pace.
Can I rely on this result as medical advice?
No. It is a general estimate for information only. It cannot replace a check-up, and your doctor can interpret the numbers for your own situation.
Is what I enter in this calculator saved or sent anywhere?
No. The calculation runs in your browser, so what you enter is not sent to our servers. We only count, anonymously, whether a tool ran successfully.
Is this calculator free to use?
Yes. It is free, needs no sign-up and has no usage limit.
Last reviewed: October 3, 2026