Switch between the four numbers runners actually use: minutes per kilometre, minutes per mile, km/h, and mph. Enter any one and the other three update instantly, with pace formatted as clean minutes:seconds. It is ideal for matching a treadmill speed to an outdoor pace or comparing race plans across units.
How it works
Pace and speed are inverses of each other, linked by the mile-to-kilometre factor 1 mile = 1.609344 km. From any input the converter computes:
- min/km → km/h: 60 ÷ pace
- km/h → mph: km/h ÷ 1.609344
- min/km → min/mile: pace × 1.609344
- and back the other way for any starting unit
Pace values are shown as minutes:seconds for readability, and speeds as decimals.
Common pace reference table
| min/km | min/mile | km/h | mph | Race context |
|---|---|---|---|---|
| 3:00 | 4:50 | 20.0 | 12.43 | Elite 10K/half marathon |
| 3:30 | 5:38 | 17.1 | 10.65 | Sub-35 min 10K pace |
| 4:00 | 6:26 | 15.0 | 9.32 | Sub-40 min 10K / ~2:48 marathon |
| 4:30 | 7:14 | 13.3 | 8.28 | Sub-45 min 10K / ~3:09 marathon |
| 5:00 | 8:02 | 12.0 | 7.46 | Sub-25 min 5K / ~3:30 marathon |
| 5:30 | 8:51 | 10.9 | 6.78 | Sub-55 min 10K / ~3:51 marathon |
| 6:00 | 9:39 | 10.0 | 6.21 | Sub-60 min 10K / ~4:13 marathon |
| 6:30 | 10:27 | 9.2 | 5.73 | 1-hour 10K / ~4:34 marathon |
| 7:00 | 11:16 | 8.6 | 5.33 | ~4:56 marathon |
Treadmill-to-road conversion
Treadmills show speed in km/h or mph, not pace. To find your equivalent outdoor pace, enter the treadmill speed into the km/h or mph field and read the min/km or min/mile result. For example, a treadmill set to 10 km/h equals exactly 6:00 min/km or about 9:39 min/mile.
Note that treadmill running feels slightly easier than road running at the same speed because there is no wind resistance and the belt assists turnover slightly. Many runners add 0.5–1% incline on a treadmill to approximate outdoor effort, though this does not change the pace conversion itself.
Why min/km and min/mile give different numbers for the same effort
A kilometre is shorter than a mile, so it takes less time to complete — which means the minutes-per-kilometre number is always smaller than the minutes-per-mile number for the same speed. A 5:00 min/km pace takes exactly 5 × 1.609344 ≈ 8:02 to cover a mile at the same speed. The effort is identical; the numbers differ because the unit of distance differs.
Every conversion runs locally in your browser with no network requests.