What this result means
Watches, treadmills, and race briefs mix languages. This converter turns min/km and min/mile into km/h and mph, and the other way around. It does not need a race distance.
Use it when a treadmill shows 12.0 km/h and you think in 5:00/km, or when a US race packet lists mile pace and your watch is metric. For time–distance–pace with a course attached, use the running pace calculator.
5:00/km is 12.0 km/h and 7.5 mph. That is also about 8:03/mile. 6:00/km is 10.0 km/h. 4:00/km is 15.0 km/h. Speed is 60 divided by pace in minutes per kilometre.
8:00/mile is about 4:58/km and 12.1 km/h. The mile conversion uses 1.609344 kilometres per mile, not a rounded 1.6.
A treadmill at 9.5 km/h is 6:19/km, or about 10:10/mile. Easy recovery jogging often lives near 8:00–9:00/km (7.5–6.7 km/h). Interval work at 16.0 km/h is 3:45/km. Those are the same identity as 5:00/km = 12.0 km/h, just different inputs.
Calculation method
km/h = 60 ÷ (minutes per km). Mile pace is kilometre pace multiplied by 1.609344. mph follows from km/h × 0.621371. Displayed pace rounds to the nearest second; speed to one decimal place.
This is exact arithmetic. There is no terrain factor and no “effort.”
Treadmill calibration and GPS smoothing can disagree with these numbers. The converter is true for the figures you type, not a correction of a miscalibrated belt.
Frequently asked questions
What speed is 5:00 per kilometre?
12.0 km/h, or 7.5 mph. That is also about 8:03 per mile.
How do I convert min/mile to min/km?
Divide mile pace by 1.609344. 8:00/mile is about 4:58/km. This tool does that in both directions.
Is treadmill speed the same as outdoor pace?
Only if the belt is accurate and you ignore wind and terrain. The conversion itself is exact for the number on the console.
What pace is 9.5 km/h on a treadmill?
About 6:19 per kilometre, or 10:10 per mile. Enter 9.5 km/h to convert both ways without picking a race distance.