Kilometers Per Day to Miles Per Hour Converter (km/day to mph)
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Kilometers Per Day to Miles Per Hour
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Convert Miles Per Hour to Kilometers Per Day (mph to km/day) ▶

Conversion Table

kilometers per day to miles per hour
km/daymph
1 km/day 0.0259 mph
2 km/day 0.0518 mph
3 km/day 0.0777 mph
4 km/day 0.1036 mph
5 km/day 0.1295 mph
6 km/day 0.1553 mph
7 km/day 0.1812 mph
8 km/day 0.2071 mph
9 km/day 0.233 mph
10 km/day 0.2589 mph
11 km/day 0.2848 mph
12 km/day 0.3107 mph
13 km/day 0.3366 mph
14 km/day 0.3625 mph
15 km/day 0.3884 mph
16 km/day 0.4142 mph
17 km/day 0.4401 mph
18 km/day 0.466 mph
19 km/day 0.4919 mph
20 km/day 0.5178 mph

How to convert

1 kilometer per day (km/day) = 0.025890466 mile per hour (mph). Kilometer Per Day (km/day) is a unit of Speed used in Metric system. Mile Per Hour (mph) is a unit of Speed used in Standard system.

Kilometers Per Day

Definition of Kilometers Per Day

Kilometers per day (km/d) is a unit of speed that measures how fast something is moving in terms of kilometers per unit of time. It is a metric unit that is derived from the base unit of length, the kilometer, and the base unit of time, the day. It is rarely used however, as the units of kilometers per hour and meters per second are considered sufficient for most situations.

One kilometer per day is equal to 0.011574074074074 meters per second, or 0.041666666666667 kilometers per hour. 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 Day

To convert kilometers per day to other units of speed, we need to multiply or divide by the corresponding conversion factors. For example, to convert kilometers per day to miles per hour, we need to multiply by 0.0254, since there are 0.0254 miles in one kilometer. To convert kilometers per day to meters per second, we need to multiply by 0.011574074074074, since there are 0.011574074074074 meters in one kilometer.

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

  • To convert 10 km/d to miles per hour (mph), we multiply by 0.0254: 10 km/d x 0.0254 = 0.254 mph
  • To convert 20 km/d to feet per second (fps), we multiply by 0.0378788, since there are 0.037878788 feet in one meter: 20 km/d x 0.037878788 = 0.75757576 fps
  • To convert 30 km/d to knots (kn), we multiply by 0.0218645833, since there are 0.021864583 nautical miles in one kilometer: 30 km/d x 0.0218645833 = 0.6559375 kn
  • To convert 40 km/d to meters per second (m/s), we multiply by 0.011574074074074: 40 km/d x 0.011574074074074 = 0.462962962963 m/s
  • To convert 50 km/d to meters per minute (m/min), we multiply by 0.6944444, since there are 0.6944444 minutes in one hour: 50 km/d x 0.6944444 = 34.722222 m/min
  • To convert 60 km/d to centimeters per second (cm/s), we multiply by 100, since there are 100 centimeters in one meter, and multiply by 0.011574074074074: 60 km/d x 100 x 0.011574074074074 = 69.444444 cm/s

Where Kilometers Per Day Are Used

Kilometers per day are mainly used for measuring the average speed or distance traveled by an object or phenomenon over a period of time that is measured in days or longer. They are often used in fields such as travel, fitness, sports, and geography, where the speed or distance traveled by an object or phenomenon is measured in terms of kilometers per unit of time.

For example, a person may travel an average of 100 km/d on a road trip across a country, which means that they cover an average distance of 100 kilometers in one day. A runner may run an average of 5 km/d as part of their training routine, which means that they run a distance of 5 kilometers in one day. A planet may have an orbital velocity of thousands of kilometers per day, which means that it covers thousands of kilometers along its orbit in one day.

Kilometers per day are also used in some other fields where the speed or distance traveled by an object or phenomenon is measured in terms of kilometers per unit of time.

History of Kilometers Per Day

The origin of kilometers per day 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 thousand meters based on the French standard meter.

The term kilometer first appeared in English in 1810, but it was not until later in the mid-late 19 th century that the use of kilometers per day became more common; before that, other units such as miles per day or leagues per day were preferred for expressing speed.

Kilometers per day have been used ever since as a standard unit of speed for measuring the average speed or distance traveled by an object or phenomenon over a period of time that is measured in days or longer. They have also been adopted by some international organizations and conventions, such as the International System of Units and the International Astronomical Union.

Example Conversions of Kilometers Per Day to Other Units

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

  • To convert 100 km/d to miles per hour, we multiply by 0.0254: 100 km/d x 0.0254 = 2.54 mph
  • To convert 200 km/d to feet per second, we multiply by 0.037878788: 200 km/d x 0.037878788 = 7.5757576 fps
  • To convert 300 km/d to knots, we multiply by 0.0218645833: 300 km/d x 0.0218645833 = 6.559375 kn
  • To convert 400 km/d to meters per second, we multiply by 0.011574074074074: 400 km/d x 0.011574074074074 = 4.62962962963 m/s
  • To convert 500 km/d to meters per minute, we multiply by 0.6944444: 500 km/d x 0.6944444 = 347.22222 m/min
  • To convert 600 km/d to centimeters per second, we multiply by 100 and multiply by 0.011574074: 600 km/d x 100 x 0.01157407 = 694.44444 cm/s
  • To convert 700 km/d to millimeters per minute, we multiply by 1000, since there are 1000 millimeters in one meter, and multiply by 0.6944444: 700 km/d x 1000 x 0.6944444 = 486111.111 mm/min
Kilometers per day also can be marked as kilometer/day and Kilometres per day (alternative British English spelling in UK).

Miles Per Hour

Definition of Miles Per Hour

Miles per hour (mph, m.p.h., MPH, or mi/h) is a unit of speed that measures how fast something is moving in terms of miles per unit of time. It is commonly used in the United States, the United Kingdom, and some other countries that use the US Standard system of measurement or have close historical ties with them. The speed limit signs on roads and highways are usually expressed in mph.

One mile per hour is equal to 1.609344 kilometers per hour, or 0.44704 meters per second. It can also be converted to other units of speed, such as feet per second, knots, or meters per second, by using appropriate conversion factors.

How to Convert Miles Per Hour

To convert miles per hour to other units of speed, we need to multiply or divide by the corresponding conversion factors. For example, to convert miles per hour to kilometers per hour, we need to multiply by 1.609344, since there are 1.609344 kilometers in one mile. To convert miles per hour to meters per second, we need to multiply by 0.44704, since there are 0.44704 meters in one mile.

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

  • To convert 10 mph to kilometers per hour (km/h), we multiply by 1.609344: 10 mph x 1.609344 = 16.09344 km/h
  • To convert 20 mph to feet per second (fps), we multiply by 1.466666667, since there are 1.466666667 feet in one mile: 20 mph x 1.466666667 = 29.33333334 fps
  • To convert 30 mph to knots (kn), we multiply by 0.8689762421, since there are 0.8689762421 nautical miles in one mile: 30 mph x 0.8689762421 = 26.069287263 kn
  • To convert 40 mph to meters per second (m/s), we multiply by 0.44704: 40 mph x 0.44704 = 17.8816 m/s
  • To convert 50 mph to meters per minute (m/min), we multiply by 26.8224, since there are 26.8224 minutes in one hour: 50 mph x 26.8224 = 1341.12 m/min
  • To convert 60 mph to centimeters per second (cm/s), we multiply by 100, since there are 100 centimeters in one meter, and multiply by 0.44704: 60 mph x 100 x 0.44704 = 2682 cm/s

Where Miles Per Hour Are Used

Miles per hour are mainly used in the United States, the United Kingdom, and some other countries that use the US Standard system of measurement or have close historical ties with them. 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 60 mph, which means that it travels a distance of 60 miles in one hour. A road sign may indicate a speed limit of 55 mph, which means that drivers should not exceed this speed on that road section. A train may have a speed of up to 150 mph, which means that it covers a distance of up to 150 miles in one hour.

Miles 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 miles per unit of time.

History of Miles Per Hour

The origin of miles per hour as a unit of speed can be traced back to the development of the US Standard system and the mile as a unit of length in the late eighteenth century. The mile was defined as one thousand six hundred and nine meters (or eight furlongs) based on the English statute mile.

The term mile first appeared in English in the late fourteenth century, but it was not until later in the early nineteenth century that the use of miles per hour became more common; before that, other units such as feet per second or leagues per hour were preferred for expressing speed.

Miles per hour have been used ever since as a standard unit of speed for the United States, the United Kingdom, and some other countries that use the US Standard system or have close historical ties with them. 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 Miles Per Hour to Other Units

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

  • To convert 100 mph to kilometers per hour, we multiply by 1.609344: 100 mph x 1.609344 = 160.9344 km/h
  • To convert 200 mph to feet per second, we multiply by 1.466666667: 200 mph x 1.466666667 = 293.3333334 fps
  • To convert 300 mph to knots, we multiply by 0.8689762421: 300 mph x 0.8689762421 = 260.69287263 kn
  • To convert 400 mph to meters per second, we multiply by 0.44704: 400 mph x 0.44704 = 178.816 m/s
  • To convert 500 mph to meters per minute, we multiply by 26.8224: 500 mph x 26.8224 = 13411.2 m/min
  • To convert 600 mph to centimeters per second, we multiply by 100 and multiply by 0.44704: 600 mph x 100 x 0.44704 = 268200 cm/s
  • To convert 700 mph to millimeters per minute, we multiply by 1000, since there are 1000 millimeters in one meter, and multiply by 26.8224: 700 mph x 1000 x 26.8224 = 18774880 mm/min
Miles per hour also can be marked as mile/hour and mi/h.



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