Miles Per Second to Kilometers Per Hour Converter (mi/s to kph)
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Miles Per Second to Kilometers Per Hour
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Convert Kilometers Per Hour to Miles Per Second (kph to mi/s) ▶

Conversion Table

miles per second to kilometers per hour
mi/skph
1 mi/s 5793.6384 kph
2 mi/s 11587.2768 kph
3 mi/s 17380.9152 kph
4 mi/s 23174.5536 kph
5 mi/s 28968.192 kph
6 mi/s 34761.8304 kph
7 mi/s 40555.4688 kph
8 mi/s 46349.1072 kph
9 mi/s 52142.7456 kph
10 mi/s 57936.384 kph
11 mi/s 63730.0224 kph
12 mi/s 69523.6608 kph
13 mi/s 75317.2992 kph
14 mi/s 81110.9376 kph
15 mi/s 86904.576 kph
16 mi/s 92698.2144 kph
17 mi/s 98491.8528 kph
18 mi/s 104285.4912 kph
19 mi/s 110079.1296 kph
20 mi/s 115872.768 kph

How to convert

1 mile per second (mi/s) = 5793.6384 kilometer per hour (kph). Mile Per Second (mi/s) is a unit of Speed used in Standard system. Kilometer Per Hour (kph) is a unit of Speed used in Metric system.

Miles per second: A unit of speed

Miles per second (mi/s) is a unit of speed or velocity in the US customary and imperial systems. It measures how fast an object is moving by calculating the distance traveled in miles divided by the time taken in seconds. For example, if a bullet travels 1 mile in 0.5 seconds, its speed is 2 mi/s.

How to convert miles per second

Miles per second can be converted to other units of speed or velocity by using simple conversion factors. Here are some common units and their conversion factors:

  • Meters per second (m/s): To convert from mi/s to m/s, multiply by 1609.34. To convert from m/s to mi/s, divide by 1609.34. For example, 1 mi/s is equal to 1609.34 m/s, and 100 m/s is equal to 0.0621371 mi/s.
  • Kilometers per hour (km/h): To convert from mi/s to km/h, multiply by 5793.64. To convert from km/h to mi/s, divide by 5793.64. For example, 1 mi/s is equal to 5793.64 km/h, and 50 km/h is equal to 0.00863028 mi/s.
  • Miles per hour (mph): To convert from mi/s to mph, multiply by 3600. To convert from mph to mi/s, divide by 3600. For example, 1 mi/s is equal to 3600 mph, and 60 mph is equal to 0.0166667 mi/s.
  • Knots (kn): To convert from mi/s to kn, multiply by 3128.31. To convert from kn to mi/s, divide by 3128.31. For example, 1 mi/s is equal to 3128.31 kn, and 15 kn is equal to 0.00479717 mi/s.
  • Feet per second (ft/s): To convert from mi/s to ft/s, multiply by 5280. To convert from ft/s to mi/s, divide by 5280. For example, 1 mi/s is equal to 5280 ft/s, and 40 ft/s is equal to 0.00757576 mi/s.
  • Inches per second (in/s): To convert from mi/s to in/s, multiply by 63360. To convert from in/s to mi/s, divide by 63360. For example, 1 mi/s is equal to 63360 in/s, and 20 in/s is equal to 0.000315789 mi/s.

Where miles per second are used

Miles per second are mainly used in physics and astronomy to measure the speed or velocity of very fast objects and phenomena.

For example, the escape velocity of the Earth is about 11 km/s or about 6.84 mi/s.

The orbital velocity of the Earth around the Sun is about 30 km/s or about 18.64 mi/s.

The speed of light in a vacuum is about 300000 km/s or about 186282 mi/s.

The speed of sound in air at sea level is about 343 m/s or about 0.213139 mi/s.

Definition of miles per second

According to the US customary and imperial systems definition, one mile per second is the speed of a body that covers a distance of one mile in a time of one second.

Mathematically, it can be expressed as:

where v is the speed or velocity in miles per second, s is the distance traveled in miles, and t is the time taken in seconds.

History of miles per second

The concept of speed or velocity has been studied since ancient times by philosophers and scientists such as Aristotle, Galileo, Newton, etc.

The mile was originally derived from the Roman mile which was defined as one thousand paces or about 5000 Roman feet.

The second was originally defined in terms of the Earth’s rotation as one eighty-six thousand four hundredth of a mean solar day.

The combination of these two units resulted in the mile per second as a unit of speed or velocity.

The mile per second was officially adopted as part of the US customary and imperial systems in the late 18th century.

Example conversions of miles per second to other units

Here are some examples of converting miles per second to other units of speed or velocity:

  • 1 mi/s = 1609.34 m/s = 5793.64 km/h = 3600 mph = 3128.31 kn = 5280 ft/s = 63360 in/s
  • 2 mi/s = 3218.68 m/s = 11587.28 km/h = 7200 mph = 6256.62 kn = 10560 ft/s = 126720 in/s
  • 5 mi/s = 8046.7 m/s = 28968.2 km/h = 18000 mph = 15657.55 kn = 26400 ft/s = 316800 in/s
  • 10 mi/s = 16093.4 m/s = 57936.4 km/h = 36000 mph = 31283.1 kn = 52800 ft/s = 633600 in/s
  • 20 mi/s = 32186.8 m/s = 115872.8 km/h = 72000 mph = 62566.2 kn = 105600 ft/s = 1267200 in/s
  • 50 mi/s = 80467 m/s = 289682 km/h = 180000 mph = 156575.5 kn = 264000 ft/s = 3168000 in/s
  • 100 mi/s = 160934 m/s = 579364 km/h = 360000 mph = 312831 kn = 528000 ft/s = 6336000 in/s
Miles per second also can be marked as mps.

Kilometers Per Hour

Definition of Kilometers Per Hour

Kilometers per hour (km/h) is a unit of speed that measures how fast something is moving in terms of kilometers per unit of time. It is commonly used in most countries around the world, except for the United States and some other countries that use the US Standard system of measurement. The speed limit signs on roads and highways are usually expressed in km/h.

One kilometer per hour is equal to 0.27777777777778 meters per second, or 3.6 meters per minute. It can also be converted to other units of speed, such as miles per hour, feet per second, or knots, by using appropriate conversion factors.

How to Convert Kilometers Per Hour

To convert kilometers per hour to other units of speed, we need to multiply or divide by the corresponding conversion factors. For example, to convert kilometers per hour to miles per hour, we need to multiply by 0.6213711922, since there are 0.6213711922 miles in one kilometer. To convert kilometers per hour to meters per second, we need to divide by 3.6, since there are 3.6 seconds in one minute.

Here are some examples of how to convert kilometers per hour to other units of length in the US Standard system and the SI system:

  • To convert 10 km/h to miles per hour (mph), we multiply by 0.6213711922: 10 km/h x 0.6213711922 = 6.213711922 mph
  • To convert 20 km/h to feet per second (fps), we multiply by 0.9113444153, since there are 0.9113444153 feet in one meter: 20 km/h x 0.9113444153 = 18.226888306 fps
  • To convert 30 km/h to knots (kn), we multiply by 0.5399568035, since there are 0.5399568035 nautical miles in one kilometer: 30 km/h x 0.5399568035 = 16.198704105 kn
  • To convert 40 km/h to meters per second (m/s), we divide by 3.6: 40 km/h / 3.6 = 11.111111111 m/s
  • To convert 50 km/h to meters per minute (m/min), we multiply by 16.666666667, since there are 16.666666667 minutes in one hour: 50 km/h x 16.666666667 = 833.33333335 m/min
  • To convert 60 km/h to centimeters per second (cm/s), we multiply by 1000, since there are 100 centimeters in one meter, and divide by 3.6: 60 km/h x 1000 / 3.6 = 16666.666667 cm/s

Where Kilometers Per Hour Are Used

Kilometers per hour are mainly used in most countries around the world that use the SI system of measurement or the metric system. They are often used for car speeds and road signs, as well as for trains, planes, boats, and bicycles.

For example, a car may have a speed of 100 km/h, which means that it travels a distance of 100 kilometers in one hour. A road sign may indicate a speed limit of 80 km/h, which means that drivers should not exceed this speed on that road section. A train may have a speed of 300 km/h, which means that it covers a distance of 300 kilometers in one hour.

Kilometers per hour are also used in some other fields, such as sports, weather, and astronomy, where the speed or velocity of an object or phenomenon is measured in kilometers per unit of time.

History of Kilometers Per Hour

The origin of kilometers per hour as a unit of speed can be traced back to the development of the metric system and the kilometer as a unit of length in the late eighteenth century. The kilometer was defined as one ten-thousandth of the distance from the equator to the North Pole along a meridian through Paris.

The term kilometer first appeared in English in 1810, but it was not until later in the mid-nineteenth century that the use of kilometers per hour became more widespread; before that, other units such as miles per hour or leagues per hour were preferred for expressing speed.

Kilometers per hour have been used ever since as a standard unit of speed for most countries around the world that use the SI system or the metric system. They have also been adopted by some international organizations and conventions, such as the International Civil Aviation Organization and the International System of Units.

Example Conversions of Kilometers Per Hour to Other Units

Here are some examples of how to convert kilometers per hour to other units of speed, using the conversion factors given above:

  • To convert 100 km/h to miles per hour, we multiply by 0.6213711922: 100 km/h x 0.6213711922 = 62.13711922 mph
  • To convert 200 km/h to feet per second, we multiply by 0.9113444153: 200 km/h x 0.9113444153 = 182.26887661 fps
  • To convert 300 km/h to knots, we multiply by 0.5399568035: 300 km/h x 0.5399568035 = 161.98704105 kn
  • To convert 400 km/h to meters per second, we divide by 3.6: 400 km/h / 3.6 = 111.11111111 m/s
  • To convert 500 km/h to meters per minute, we multiply by 16.666666667: 500 km/h x 16.666666667 = 8333.3333335 m/min
  • To convert 600 km/h to centimeters per second, we multiply by 1000 and divide by 3.6: 600 km/h x 1000 / 3.6 = 166666.666667 cm/s
  • To convert 700 km/h to millimeters per minute, we multiply by 1000000, since there are 1000000 millimeters in one kilometer, and divide by 60, since there are 60 minutes in one hour: 700 km/h x 1000000 / 60 = 11666666.666667 mm/min
Kilometers per hour also can be marked as km/h and Kilometres per hour(alternative British English spelling in UK).



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Kilometers Per Hour to Miles Per Day
Kilometers Per Hour to Miles Per Minute
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Kilometers Per Hour to Miles Per Hour
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Kilometers Per Hour to Mach
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Light Speed to Miles Per Hour
Mach to Kilometers Per Hour
Mach to Miles Per Second
Mach to Miles Per Hour
Miles Per Second to Kilometers Per Hour
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Miles Per Hour to Knots
Miles Per Hour to Kilometers Per Hour
Miles Per Hour to Light Speed
Miles Per Hour to Mach
Miles Per Hour to Meters Per Second
Meters Per Second to Kilometers Per Hour
Meters Per Second to Miles Per Hour

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