Running Pace Calculator
Pace per km and per mile from distance and time.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Calculates running pace per kilometre and per mile and average speed from a distance and a finish time, then projects finish times for 5 km, 10 km, half marathon and marathon at the same pace.
How to use it
- Enter the distance and choose kilometres or miles.
- Enter the time as h:mm:ss or mm:ss.
- Read the pace, speed and projected race times.
Frequently asked questions
Can I really keep the same pace for a marathon?
Rarely. The projections assume an even pace; most runners slow down over longer distances, so treat them as an upper bound.
How do I convert pace to speed?
Divide 60 by the pace in minutes: 5:00 per km is 12 km/h.
Keep going
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