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Convert Knots to Kilometers Per Hour (kt to kph) ▶ Conversion Table
How to convert1 kilometer per hour (kph) = 0.539956803 knot (kt). Kilometer Per Hour (kph) is a unit of Speed used in Metric system. Knot (kt) is a unit of Speed used in Standard system. Kilometers Per HourDefinition of Kilometers Per HourKilometers 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 HourTo 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:
Where Kilometers Per Hour Are UsedKilometers 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 HourThe 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 UnitsHere are some examples of how to convert kilometers per hour to other units of speed, using the conversion factors given above:
KnotsDefinition of KnotsKnots, commonly denoted kn, is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h (approximately 1.151 mph or 0.514 m/s). It is the standard unit of speed used in meteorology, and in maritime and air navigation. A vessel travelling at 1 kn along a meridian travels approximately one minute of geographic latitude in one hour. How to Convert KnotsTo convert knots to other units of speed, we need to multiply or divide by the corresponding conversion factors. For example, to convert knots to kilometers per hour, we need to multiply by 1.852, since there are 1.852 kilometers in one nautical mile. To convert knots to meters per second, we need to divide by 3.6, since there are 3.6 seconds in one hour. Here are some examples of how to convert knots to other units of length in the US Standard system and the SI system:
Where Knots Are UsedKnots are used in various fields of science and technology where the speed and direction of movement of objects or phenomena are measured or applied in relation to water or air currents. For example:
History of KnotsThe origin of knots as a unit of speed can be traced back to the ancient practice of measuring the speed of ships by using a device called a chip log or log-line. This device consisted of a wooden board attached to a rope with knots tied at regular intervals along its length. The board was thrown overboard from the stern of the ship and allowed to drag behind it while the rope was let out for a fixed amount of time (usually measured by a sandglass). The number of knots that passed over the rail of the ship during that time indicated the speed of the ship in nautical miles per hour. The first recorded use of this method was by the Phoenicians around the second millennium BCE. The device was later improved and standardized by various civilizations such as the Greeks, Romans, Arabs, Vikings, Chinese, and Europeans. The length of the nautical mile and the spacing of the knots varied from place to place and from time to time until they were fixed by international agreement in the late nineteenth century. The term knot was derived from the Old English word cnotta meaning “a knot”. It was first used as a unit of speed by English sailors in the early seventeenth century. Example Conversions of Knots to Other UnitsHere are some examples of how to convert knots to other units of speed, using the conversion factors given above:
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Kilometers Per Hour to Centimeters Per Second Kilometers Per Hour to Feet Per Second Kilometers Per Hour to Kilometers Per Day Kilometers Per Hour to Kilometers Per Second Kilometers Per Hour to Knots Kilometers Per Hour to Light Speed Kilometers Per Hour to Meters Per Minute Kilometers Per Hour to Mach Kilometers Per Hour to Miles Per Day Kilometers Per Hour to Miles Per Minute Kilometers Per Hour to Miles Per Second Kilometers Per Hour to Miles Per Hour Kilometers Per Hour to Meters Per Second Knots to Feet Per Second Knots to Kilometers Per Day Knots to Kilometers Per Hour Knots to Light Speed Knots to Mach Knots to Miles Per Day Knots to Miles Per Minute Knots to Miles Per Second Knots to Miles Per Hour Knots to Meters Per Second Kilometers Per Second to Kilometers Per Hour Knots to Kilometers Per Hour Knots to Miles Per Hour Kilometers Per Hour to Kilometers Per Second Kilometers Per Hour to Knots Kilometers Per Hour to Light Speed Kilometers Per Hour to Mach Kilometers Per Hour to Miles Per Second Kilometers Per Hour to Miles Per Hour Kilometers Per Hour to Meters Per Second Light Speed to Kilometers Per Hour 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 Miles Per Second to Mach 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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