Free pace calculator · km & miles
The fastest running pace calculator on the web. Pick a distance, set your target time, and get the exact pace, speed and splits you need — in kilometers or miles.
Common target paces and the finish times they produce, all in your selected unit.
| Pace (min/km) | km/h | 5K | 10K | 21.1K | 42.2K |
|---|---|---|---|---|---|
| 3:30 | 17.1 | 17:30 | 35:00 | 1:13:50 | 2:27:41 |
| 4:00 | 15.0 | 20:00 | 40:00 | 1:24:23 | 2:48:47 |
| 4:30 | 13.3 | 22:30 | 45:00 | 1:34:56 | 3:09:53 |
| 5:00 | 12.0 | 25:00 | 50:00 | 1:45:29 | 3:30:59 |
| 5:30 | 10.9 | 27:30 | 55:00 | 1:56:02 | 3:52:04 |
| 6:00 | 10.0 | 30:00 | 1:00:00 | 2:06:35 | 4:13:10 |
| 6:30 | 9.2 | 32:30 | 1:05:00 | 2:17:08 | 4:34:16 |
| 7:00 | 8.6 | 35:00 | 1:10:00 | 2:27:41 | 4:55:22 |
| 7:30 | 8.0 | 37:30 | 1:15:00 | 2:38:14 | 5:16:28 |
| 8:00 | 7.5 | 40:00 | 1:20:00 | 2:48:47 | 5:37:34 |
Choose 5K, 10K, half, marathon — or set your own in km or miles.
Enter hours, minutes and seconds. Everything updates live.
Read your pace and speed in your chosen unit. Train it. Hit it.
Divide your total time in seconds by the distance. For min/km, divide by km; for min/mile, divide by miles. This calculator does both instantly — just flip the unit toggle.
Pace = time per unit of distance (min/km or min/mile). Speed = distance per hour (km/h or mph). Runners usually train with pace because it's easier to hold steady.
Roughly 5:41 min/km or 9:09 min/mile — about 10.5 km/h (6.55 mph) for the full 42.195 km.
Pacing is the #1 reason runners blow up on race day. Knowing the exact pace your goal time requires lets you train it, hold it, and finish strong instead of guessing.