Speedometers are used in vehicles to measure speed

Convert Miles Per Hour to Kilometers Per Second

Convert from miles per hour to kilometers per second with this simple formula:
kilometers per second = miles per hour × 0.000447
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1 Mile Per Hour = 0.000447 Kilometers Per Second

Learn How to Convert Miles Per Hour to Kilometers Per Second Using our Conversion Formula

Converting a mile per hour speed measurement to a kilometer per second measurement involves multiplying your speed by the conversion ratio to find the result. A mile per hour is equal to 0.000447 kilometers per second, so to convert simply multiply by 0.000447.

For example, 5mph = (5 × 0.000447) = 0.002235km/sec.

Miles per hour and kilometers per second are both units used to measure speed. Learn more about speed and find more speed measurement conversion calculators. A mile per hour is an imperial measurement and can be abbreviated as mph, for example 1mph. A kilometer per second is a metric measurement and can be abbreviated as km/sec, for example 1km/sec. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

miles per hour and kilometers per second are units used to measure speed
Convert Kilometers Per Second to Miles Per Hour

More Speed Conversions

Convert to Knots Speed
1mph is equal to 0.868976 knots
Convert to Mach Speed
1mph is equal to 0.001303 mach
Convert to Speed Of Sound Speed
1mph is equal to 0.001303 speed of sound
Convert to Feet Per Second Speed
1mph is equal to 1.466667 feet per second
Convert to Kilometers Per Hour Speed
1mph is equal to 1.609344 kilometers per hour
Convert to Meters Per Second Speed
1mph is equal to 0.44704 meters per second
Convert to Centimeters Per Second Speed
1mph is equal to 44.704 centimeters per second

Mile Per Hour Measurements and Equivalent Kilometer Per Second Conversions

Common mile per hour values converted to the equivalent kilometer per second value
Miles Per Hour Kilometers Per Second Miles Per Hour Kilometers Per Second Miles Per Hour Kilometers Per Second
1 0.000447 21 0.009388 41 0.018329
2 0.000894 22 0.009835 42 0.018776
3 0.001341 23 0.010282 43 0.019223
4 0.001788 24 0.010729 44 0.01967
5 0.002235 25 0.011176 45 0.020117
6 0.002682 26 0.011623 46 0.020564
7 0.003129 27 0.01207 47 0.021011
8 0.003576 28 0.012517 48 0.021458
9 0.004023 29 0.012964 49 0.021905
10 0.00447 30 0.013411 50 0.022352
11 0.004917 31 0.013858 51 0.022799
12 0.005364 32 0.014305 52 0.023246
13 0.005812 33 0.014752 53 0.023693
14 0.006259 34 0.015199 54 0.02414
15 0.006706 35 0.015646 55 0.024587
16 0.007153 36 0.016093 56 0.025034
17 0.0076 37 0.01654 57 0.025481
18 0.008047 38 0.016988 58 0.025928
19 0.008494 39 0.017435 59 0.026375
20 0.008941 40 0.017882 60 0.026822