What this tool does
The Pace Calculator turns a distance and a finish time into a clear running pace and average speed. It helps runners, joggers, and walkers who want to know how fast they actually moved, plan a target for an upcoming race, or compare two training sessions on equal terms. Instead of guessing, you get a precise pace per kilometer or mile in minutes and seconds, plus your average speed for the whole effort.
How to use it
- Enter your Distance as a number (for example 5 or 10.5).
- Choose your Unit, either km or mi, to match how the distance was measured.
- Type the Hours, Minutes, and Seconds it took you to cover that distance.
- Press Calculate to see your pace per unit and your average speed.
You can leave Hours at zero for shorter runs and only fill in Minutes and Seconds.
A quick example
Run 5 km in 25 minutes (so Distance is 5, Unit is km, Hours is 0, Minutes is 25, Seconds is 0) and you get a steady 5:00 per km pace, which works out to 12 km/h average speed. Halving your time would roughly halve your pace number, and adding distance at the same effort keeps the pace close. Watching that number across runs is one of the simplest ways to track progress.
This calculator runs entirely in your browser, so your numbers stay private. It is completely free and needs no sign-up.
Frequently asked questions
- What is running pace?
- Pace is the time it takes to cover one unit of distance, usually shown as minutes and seconds per kilometer or per mile. A lower number means you are running faster.
- How do I convert pace to speed?
- Speed is distance divided by time, so a 5:00 per km pace equals 12 km/h. This tool shows both your pace and your average speed at the same time, so you do not have to do the math.
- Can I use it for both kilometers and miles?
- Yes. Pick km or mi in the Unit field, and the result is calculated and labeled in that unit so the numbers always match how you train or race.
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Last updated: June 17, 2026