Kilometers Per Second to Meters Per Second Converter (km/s to m/s)
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Kilometers Per Second to Meters Per Second
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Convert Meters Per Second to Kilometers Per Second (m/s to km/s) ▶

Conversion Table

kilometers per second to meters per second
km/sm/s
1 km/s 1000 m/s
2 km/s 2000 m/s
3 km/s 3000 m/s
4 km/s 4000 m/s
5 km/s 5000 m/s
6 km/s 6000 m/s
7 km/s 7000 m/s
8 km/s 8000 m/s
9 km/s 9000 m/s
10 km/s 10000 m/s
11 km/s 11000 m/s
12 km/s 12000 m/s
13 km/s 13000 m/s
14 km/s 14000 m/s
15 km/s 15000 m/s
16 km/s 16000 m/s
17 km/s 17000 m/s
18 km/s 18000 m/s
19 km/s 19000 m/s
20 km/s 20000 m/s

How to convert

1 kilometer per second (km/s) = 1000 meter per second (m/s). Kilometer Per Second (km/s) is a unit of Speed used in Metric system. Meter Per Second (m/s) is a unit of Speed used in Metric system.

Kilometers per second: A unit of speed

Kilometers per second (km/s) is a unit of speed or velocity in the International System of Units (SI). It measures how fast an object is moving by calculating the distance traveled in kilometers divided by the time taken in seconds. For example, if a rocket travels 10 kilometers in 5 seconds, its speed is 2 km/s.

How to convert kilometers per second

Kilometers 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 km/s to m/s, multiply by 1000. To convert from m/s to km/s, divide by 1000. For example, 2 km/s is equal to 2000 m/s, and 500 m/s is equal to 0.5 km/s.
  • Kilometers per hour (km/h): To convert from km/s to km/h, multiply by 3600. To convert from km/h to km/s, divide by 3600. For example, 2 km/s is equal to 7200 km/h, and 100 km/h is equal to 0.028 km/s.
  • Miles per hour (mph): To convert from km/s to mph, multiply by 2236.94. To convert from mph to km/s, divide by 2236.94. For example, 2 km/s is equal to 4473.88 mph, and 60 mph is equal to 0.027 km/s.
  • Knots (kn): To convert from km/s to kn, multiply by 1943.84. To convert from kn to km/s, divide by 1943.84. For example, 2 km/s is equal to 3887.68 kn, and 30 kn is equal to 0.015 km/s.
  • Feet per second (ft/s): To convert from km/s to ft/s, multiply by 3280.84. To convert from ft/s to km/s, divide by 3280.84. For example, 2 km/s is equal to 6561.68 ft/s, and 100 ft/s is equal to 0.03 km/s.
  • Miles per second (mi/s): To convert from km/s to mi/s, multiply by 0.621371. To convert from mi/s to km/s, divide by 0.621371. For example, 2 km/s is equal to 1.24 mi/s, and 1 mi/s is equal to 1.61 km/s.

Where kilometers per second are used

Kilometers per second are mainly used in astronomy and space science to measure the speed or velocity of celestial bodies and spacecrafts.

For example, the Earth orbits the Sun at an average speed of about 30 km/s.

The Moon orbits the Earth at an average speed of about 1 km/s.

The International Space Station orbits the Earth at an average speed of about 7.66 km/s.

The Voyager 1 spacecraft, which is the farthest human-made object from Earth, travels at a speed of about 17 km/s.

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

Definition of kilometers per second

According to the SI definition, one kilometer per second is the speed of a body that covers a distance of one kilometer in a time of one second.

Mathematically, it can be expressed as:

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

History of kilometers 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 kilometer was originally defined in 1793 by the French Academy of Sciences as one ten-millionth of the distance from the equator to the North Pole along a meridian through Paris.

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 kilometer per second as a unit of speed or velocity.

The kilometer per second was officially adopted as part of the SI system in 1960.

Example conversions of kilometers per second to other units

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

  • 1 km/s =1000 m/s = 3600 km/h = 2236.94 mph = 1943.84 kn = 3280.84 ft/s = 0.62 mi/s
  • 2 km/s = 2000 m/s = 7200 km/h = 4473.88 mph = 3887.68 kn = 6561.68 ft/s = 1.24 mi/s
  • 5 km/s = 5000 m/s = 18000 km/h = 11184.7 mph = 9721.92 kn = 16404.2 ft/s = 3.11 mi/s
  • 10 km/s = 10000 m/s = 36000 km/h = 22369.4 mph = 19438.4 kn = 32808.4 ft/s = 6.21 mi/s
  • 20 km/s = 20000 m/s = 72000 km/h = 44738.8 mph = 38876.8 kn = 65616.8 ft/s = 12.43 mi/s
  • 50 km/s = 50000 m/s = 180000 km/h = 111847 mph = 97219.2 kn = 164042 ft/s = 31.07 mi/s
  • 100 km/s = 100000 m/s = 360000 km/h = 223694 mph = 194384 kn = 328084 ft/s = 62.14 mi/s
Kilometers per second also can be marked as km/s and kilometres per second(alternative British English spelling in UK).

Meters per second: A unit of speed

Meters per second (m/s) is a unit of speed or velocity in the International System of Units (SI). It measures how fast an object is moving by calculating the distance traveled in meters divided by the time taken in seconds. For example, if a car travels 100 meters in 5 seconds, its speed is 20 m/s.

How to convert meters per second

Meters 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:

  • Kilometers per hour (km/h): To convert from m/s to km/h, multiply by 3.6. To convert from km/h to m/s, divide by 3.6. For example, 20 m/s is equal to 72 km/h, and 50 km/h is equal to 13.89 m/s.
  • Miles per hour (mph): To convert from m/s to mph, multiply by 2.2369. To convert from mph to m/s, divide by 2.2369. For example, 20 m/s is equal to 44.74 mph, and 30 mph is equal to 13.41 m/s.
  • Knots (kn): To convert from m/s to kn, multiply by 1.9438. To convert from kn to m/s, divide by 1.9438. For example, 20 m/s is equal to 38.88 kn, and 15 kn is equal to 7.72 m/s.
  • Feet per second (ft/s): To convert from m/s to ft/s, multiply by 3.2808. To convert from ft/s to m/s, divide by 3.2808. For example, 20 m/s is equal to 65.62 ft/s, and 40 ft/s is equal to 12.19 m/s.

Where meters per second are used

Meters per second are widely used in science and engineering to measure the speed or velocity of various phenomena, such as sound waves, light waves, wind speed, fluid flow, projectile motion, etc.

Meters per second are also used in some countries as the official unit of speed or velocity for road traffic signs and regulations. For example, in Canada, the maximum speed limit on highways is usually 100 km/h, which is equivalent to 27.78 m/s.

Meters per second are also used in sports and athletics to measure the performance of athletes, such as sprinters, swimmers, cyclists, etc.

Definition of meters per second

According to the SI definition, one meter per second is the speed of a body that covers a distance of one meter in a time of one second.

Mathematically, it can be expressed as:

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

History of meters 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 meter was originally defined in 1793 by the French Academy of Sciences as one ten-millionth of the distance from the equator to the North Pole along a meridian through Paris.

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 meter per second as a unit of speed or velocity.

The meter per second was officially adopted as part of the SI system in 1960.

Example conversions of meters per second to other units

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

  • 10 m/s = 36 km/h = 22.37 mph = 19.44 kn = 32.81 ft/s
  • 5 m/s = 18 km/h = 11.18 mph = 9.72 kn = 16.4 ft/s
  • 15 m/s = 54 km/h = 33.55 mph = 29.17 kn = 49.21 ft/s
  • 25 m/s = 90 km/h = 55.92 mph = 48.61 kn = 82.02 ft/s
  • 50 m/s = 180 km/h = 111.85 mph = 97.22 kn = 164.04 ft/s
  • 100 m/s = 360 km/h = 223.69 mph = 194.39 kn = 328.08 ft/s
  • 200 m/s = 720 km/h = 447.39 mph = 388.79 kn = 656.17 ft/s
Meters per second also can be marked as m/s and metres per second(alternative British English spelling in UK).



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