Use this free online speed converter to change mile/hour into kilometer/second instantly. Type in the mile/hour value, and the equivalent kilometer/second is calculated for you in real time.
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Mile/hour
Kilometer/second
How to use this Mile/hour to Kilometer/second Converter 🤔
Follow these steps to convert given Mile/hour value from Mile/hour units to Kilometer/second units.
Enter the input Mile/hour value in the text field.
The given Mile/hour is converted to Kilometer/second in realtime ⌚ using the formula, and displayed under the Kilometer/second label.
You may copy the resulting Kilometer/second value using the Copy button.
Formula
To convert given speed from Mile/hour to Kilometer/second, use the following formula.
Kilometer/second = Mile/hour / 2236.9362921
Calculation
Calculation will be done after you enter a valid input.
Mile/hour to Kilometer/second Conversion Table
The following table gives some of the most used conversions from Mile/hour to Kilometer/second.
Mile/hour (mi/h)
Kilometer/second (km/s)
0 mi/h
0 km/s
1 mi/h
0.00044704km/s
10 mi/h
0.0044704km/s
60 mi/h
0.0268224km/s
100 mi/h
0.044704km/s
220 mi/h
0.0983488km/s
400 mi/h
0.1788km/s
500 mi/h
0.2235km/s
1000 mi/h
0.447km/s
Mile/hour
The mile per hour (mph) is a unit of speed commonly used in the United States and the United Kingdom to measure the speed of vehicles. It indicates the number of miles traveled in one hour. This unit is prevalent in transportation and is used on road signs and vehicle speedometers in countries where the imperial system is used.
Kilometer/second
The kilometer per second (km/s) is a unit of speed that represents how many kilometers an object travels in one second. This unit is often used in astronomy and space science to describe the velocities of celestial bodies and spacecraft, as these speeds are far beyond those encountered in everyday life.
{
"conversion": "mile_per_hour-kilometer_per_second",
"x_slug": "mile_per_hour",
"y_slug": "kilometer_per_second",
"x": "mi/h",
"y": "km/s",
"x_desc": "Mile/hour",
"y_desc": "Kilometer/second",
"category": "Speed",
"symbol": "m",
"formula": "x / 2236.9362921",
"precision": 11,
"x_desc_alt": "mph",
"examples": "<div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">1</span>\n <h3 class=\"question\">A race car drives at a speed of 150 miles per hour during a race.<br>Convert this speed from miles per hour to Kilometer/second.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The speed in mile/hour is:</p>\n <p class=\"step\"><span>Speed<sub>(Mile/hour)</sub></span> = 150</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert speed from mile/hour to kilometer/second is:</p>\n <p class=\"formula step\"><span>Speed<sub>(Kilometer/second)</sub></span> = <span>Speed<sub>(Mile/hour)</sub></span> / 2236.9362921</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Speed<sub>(Mile/hour)</sub> = 150</strong> in the above formula.</p>\n <p class=\"step\"><span>Speed<sub>(Kilometer/second)</sub></span> = <span>150</span> / 2236.9362921</p>\n <p class=\"step\"><span>Speed<sub>(Kilometer/second)</sub></span> = 0.067056</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>150 mi/h</strong> is equal to <strong>0.067056 km/s</strong>.</p>\n <p>The speed is <strong>0.067056 km/s</strong>, in kilometer/second.</p>\n </div>\n <div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">2</span>\n <h3 class=\"question\">A commercial airplane cruises at 500 miles per hour.<br>Convert this speed from miles per hour to Kilometer/second.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The speed in mile/hour is:</p>\n <p class=\"step\"><span>Speed<sub>(Mile/hour)</sub></span> = 500</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert speed from mile/hour to kilometer/second is:</p>\n <p class=\"formula step\"><span>Speed<sub>(Kilometer/second)</sub></span> = <span>Speed<sub>(Mile/hour)</sub></span> / 2236.9362921</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Speed<sub>(Mile/hour)</sub> = 500</strong> in the above formula.</p>\n <p class=\"step\"><span>Speed<sub>(Kilometer/second)</sub></span> = <span>500</span> / 2236.9362921</p>\n <p class=\"step\"><span>Speed<sub>(Kilometer/second)</sub></span> = 0.2235</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>500 mi/h</strong> is equal to <strong>0.2235 km/s</strong>.</p>\n <p>The speed is <strong>0.2235 km/s</strong>, in kilometer/second.</p>\n </div>\n ",
"table1n": "<h2><span class=\"x\">Mile/hour</span> to <span class=\"y\">Kilometer/second</span> Conversion Table</h2><p>The following table gives some of the most used conversions from Mile/hour to Kilometer/second.</p><table><thead><tr><th scope=\"column\" role=\"columnheader\">Mile/hour (<span class=\"unit\">mi/h</span>)</th><th scope=\"column\" role=\"columnheader\">Kilometer/second (<span class=\"unit\">km/s</span>)</th><tr></thead><tbody><tr><td>0 <span class=\"unit\">mi/h</span></td><td>0 <span class=\"unit\">km/s</span></td></tr><tr><td>1 <span class=\"unit\">mi/h</span></td><td>0<span>.00044704</span> <span class=\"unit\">km/s</span></td></tr><tr><td>10 <span class=\"unit\">mi/h</span></td><td>0<span>.0044704</span> <span class=\"unit\">km/s</span></td></tr><tr><td>60 <span class=\"unit\">mi/h</span></td><td>0<span>.0268224</span> <span class=\"unit\">km/s</span></td></tr><tr><td>100 <span class=\"unit\">mi/h</span></td><td>0<span>.044704</span> <span class=\"unit\">km/s</span></td></tr><tr><td>220 <span class=\"unit\">mi/h</span></td><td>0<span>.0983488</span> <span class=\"unit\">km/s</span></td></tr><tr><td>400 <span class=\"unit\">mi/h</span></td><td>0<span>.1788</span> <span class=\"unit\">km/s</span></td></tr><tr><td>500 <span class=\"unit\">mi/h</span></td><td>0<span>.2235</span> <span class=\"unit\">km/s</span></td></tr><tr><td>1000 <span class=\"unit\">mi/h</span></td><td>0<span>.447</span> <span class=\"unit\">km/s</span></td></tr></table>",
"units": [
[
"meter_per_second",
"Meter/second",
"m/s"
],
[
"kilometer_per_hour",
"Kilometer/hour",
"km/h",
"kph"
],
[
"kilometer_per_minute",
"Kilometer/minute",
"km/min"
],
[
"kilometer_per_second",
"Kilometer/second",
"km/s"
],
[
"mile_per_hour",
"Mile/hour",
"mi/h",
"mph"
],
[
"mile_per_minute",
"Mile/minute",
"mi/min"
],
[
"mile_per_second",
"Mile/second",
"mi/s"
],
[
"meter_per_hour",
"Meter/hour",
"m/h"
],
[
"meter_per_minute",
"Meter/minute",
"m/min"
],
[
"centimeter_per_minute",
"Centimeter/minute",
"cm/min"
],
[
"centimeter_per_second",
"Centimeter/second",
"cm/s"
],
[
"millimeter_per_second",
"Millimeter/second",
"mm/s"
],
[
"foot_per_hour",
"Foot/hour",
"ft/h"
],
[
"foot_per_minute",
"Foot/minute",
"ft/min"
],
[
"foot_per_second",
"Foot/second",
"ft/s"
],
[
"yard_per_hour",
"Yard/hour",
"yd/h"
],
[
"yard_per_minute",
"Yard/minute",
"yd/min"
],
[
"yard_per_second",
"Yard/second",
"yd/s"
],
[
"knot",
"Knot",
"kt"
],
[
"knot_uk",
"Knot (UK)",
"kt (UK)"
],
[
"mach",
"Mach (SI standard)",
"mach"
],
[
"velocity_of_light",
"Velocity of Light (in vacuum)",
""
]
],
"y_long_desc": "The kilometer per second (km/s) is a unit of speed that represents how many kilometers an object travels in one second. This unit is often used in astronomy and space science to describe the velocities of celestial bodies and spacecraft, as these speeds are far beyond those encountered in everyday life.",
"x_long_desc": "The mile per hour (mph) is a unit of speed commonly used in the United States and the United Kingdom to measure the speed of vehicles. It indicates the number of miles traveled in one hour. This unit is prevalent in transportation and is used on road signs and vehicle speedometers in countries where the imperial system is used."
}
ConvertOnline