Running Pace Calculator
Your pace and average speed for any distance, with your split times.
Pace and speed: conversion table
At a constant pace. Pace (min/km) = 60 ÷ speed (km/h).
| Pace (min/km) | Speed (km/h) | 10 km | Marathon |
|---|---|---|---|
| 3:00 | 20.00 | 30:00 | 2:06:35 |
| 3:15 | 18.46 | 32:30 | 2:17:08 |
| 3:30 | 17.14 | 35:00 | 2:27:41 |
| 3:45 | 16.00 | 37:30 | 2:38:14 |
| 4:00 | 15.00 | 40:00 | 2:48:47 |
| 4:15 | 14.12 | 42:30 | 2:59:20 |
| 4:30 | 13.33 | 45:00 | 3:09:53 |
| 4:45 | 12.63 | 47:30 | 3:20:26 |
| 5:00 | 12.00 | 50:00 | 3:30:59 |
| 5:15 | 11.43 | 52:30 | 3:41:31 |
| 5:30 | 10.91 | 55:00 | 3:52:04 |
| 5:45 | 10.43 | 57:30 | 4:02:37 |
| 6:00 | 10.00 | 1:00:00 | 4:13:10 |
| 6:15 | 9.60 | 1:02:30 | 4:23:43 |
| 6:30 | 9.23 | 1:05:00 | 4:34:16 |
| 6:45 | 8.89 | 1:07:30 | 4:44:49 |
| 7:00 | 8.57 | 1:10:00 | 4:55:22 |
| 7:15 | 8.28 | 1:12:30 | 5:05:55 |
| 7:30 | 8.00 | 1:15:00 | 5:16:28 |
| 7:45 | 7.74 | 1:17:30 | 5:27:01 |
| 8:00 | 7.50 | 1:20:00 | 5:37:34 |
Frequently asked questions
How do I calculate my running pace?
Divide your time by the distance covered. For 10 km run in 47 min 30 s, that is 2,850 seconds, the pace is 285 seconds per kilometre, or 4 min 45 s per kilometre (4:45 min/km). The calculator does this division for you and gives the result in minutes and seconds.
How do I convert a speed in km/h into a pace in min/km?
Divide 60 by the speed: the result is the pace in minutes per kilometre. At 12 km/h, 60 ÷ 12 = 5, so 5:00 min/km; at 10 km/h, 6:00 min/km; at 15 km/h, 4:00 min/km. When the division is not exact, multiply the decimal part by 60 to get the seconds: 60 ÷ 12.63 = 4.75 minutes, so 4 min 45 s. The other way round, the speed is 60 divided by the pace expressed in minutes.
What is the exact distance of a half marathon and a marathon?
A marathon is 42.195 km, and a half marathon is half of that, 21.0975 km. These are the distances the calculator uses: a marathon run at 5:00 min/km finishes in 3:30:59, not 3:30:00.
What are split times for?
They are the times at which you pass each marker if you hold the same pace from start to finish. They let you check during a race that you are on target, or plan a session: the “At another distance” field gives the time for any distance in metres, such as 400 m or 800 m on the track. The calculation does not account for elevation, wind or fatigue: it is a constant-pace reference, not a prediction.
Are my times saved?
No. The calculation runs entirely in your browser: the distance and time you enter are neither sent nor saved, and they disappear when you leave the page.