# Speed Unit Converter

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## Most often used measurement conversion

miles / hour to kilometers / hour (mph to km/h) conversion
1 mile / hour (mph) is equal 1.609344 kilometers / hour (km/h) use this converter
kilometers / hour to miles / hour (km/h to mph) conversion
1 kilometer / hour (km/h) is equal 0.62137119223733 mile / hour (mph) use this converter
kilometers / hour to meters / second (km/h to m/s) conversion
1 kilometer / hour (km/h) is equal 0.27777777777778 meter / second (m/s) use this converter
meters / second to kilometers / hour (m/s to km/h) conversion
1 meter / second (m/s) is equal 3.6 kilometers / hour (km/h) use this converter
mach to speed of light conversion
1 mach (at std. atm.) (M) is equal 1.1441248465297E-6 speed of light use this converter
speed of light to mach conversion
1 speed of light is equal 874030.48979591 mach (M) use this converter
speed of light to speed of sound (at std. atm.) conversion
1 speed of light is equal 874030.48979591 speed of sound (at std. atm.) use this converter
speed of sound (at std. atm.) to speed of light conversion
1 speed of sound (at std. atm.) is equal 1.1441248465297E-6 speed of light use this converter
speed of sound (at std. atm.) to mach conversion
1 speed of sound (at std. atm.) is equal 1 mach (at std. atm.) (M) use this converter
mach to speed of sound (at std. atm.) conversion
1 mach (at std. atm.) (M) is equal 1 speed of sound (at std. atm.) use this converter

## Definition

Speed - a term that may mean two things; either the rate of changes through time, or a physical quantity that basically describes the rate at which an object covers distance.

Speed formula:

 v = d t
 Where: d - distance t - time

## Units of measurement

centimeter / second (cm/s), foot / second (ft/s), kilometer / hour (km/h), kilometer / minute (km/min), kilometer / second (km/s), knot (kn), mach (at std. atm.) (M), meter / minute (m/min), meter / second (m/s), mile / hour (mph), speed of light, speed of sound (at std. atm.), yard / second

### About Speed Unit Converter tool.

We use rounding at unit-conversion.info. This means that some results will be rounded to avoid the numbers getting too long. While often rounding works up to a specific decimal place, we’ve decided that limiting the length of the result to 13 digits would be more favorable to keep the results consistent. The converters accept scientific notation and converts immediately.
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