Speed Converter
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Speed Converter
Convert a speed measurement using the conversion calculator below.
Convert From:
Miles Per Hour
Convert To:
Kilometers Per Hour
Value:
Results:
Speed Conversion Calculators
See a complete list of conversion calculators for each unit of speed by selecting one below.
Most Popular
mph to km/h converter
km/h to mph converter
ft/s to mph converter
mph to m/s converter
Speed Units
knot converters
Mach converters
speed of sound converters
speed of light converters
miles per hour converters
foot per second converters
kilometer per second converters
kilometer per hour converters
meter per second converters
centimeter per second converters
What Is Speed?
Speed is a measurement of how fast an object is moving, or the rate that an object moves over a distance. An object moving at a high speed will cover a lot of distance in a short amount of time, while an object moving at a low speed will cover little distance over a longer amount of time.
Speed over land is commonly measured in miles per hour or kilometers per hour, and speed over sea is commonly measured in knots. The speed of sound is equal to 767.27 miles per hour or 1,235 kilometers per hour.
How to Calculate Speed
Speed can be measured as the distance an object travels divided by the time it takes to travel this distance, thus the formula to calculate speed is:
speed = distance / time