Utilnaro
Category: Converters

Speed and Pace Converter

Convert km/h, mph, m/s, knots - and running pace.

Runs in your browserProcessed locally. Your input never leaves your device.

Converting Speed and pace.

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You can type here too — it converts the other way.

1 km/h = 0.621371 mph

Exact by definition

The same value in other units

metre per second
0.277778 m/s
knot
0.539957 kn
minutes per kilometre
60 min/km
Settings

Digits kept in the answer. Automatic keeps six, which hides floating-point noise without losing anything real.

Convert a whole list

Paste one conversion per line, written the way you would say it: "5 km to mi". Handy for a column copied out of a spreadsheet.

Details

About this tool

Converts between speeds and running or swimming pace. Pace is the reason this is not a plain multiplication table: minutes per kilometre is the reciprocal of speed, so a smaller number means a faster athlete, and the converter handles that rather than scaling it.

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Ready-made conversions

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Good to know

Questions people actually ask

How do I turn a speed into running pace?
Pick min/km as the target unit. 12 km/h is a 5:00 pace; the converter shows both the decimal minutes and the minutes-and-seconds form a watch would display.
Is Mach a fixed speed?
No. The speed of sound depends on air temperature, so Mach 1 is about 340 m/s at sea level and closer to 295 m/s at cruising altitude. This converter uses the sea-level ISA value and labels it as a reference figure.