Online calculator to convert miles per hour to lớn kilometers per hour (mph to lớn km/h) with formulas, examples, và tables. Our conversions provide a quick and easy way khổng lồ convert between speed or Velocity units.

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Conversion Calculator

Calculate km/h

How to lớn convert mph to lớn km/h: Enter a value in the mph field and click on the "Calculate km/h" button. Your answer will appear in the km/h field.

Conversion Definitions

The following is a menu of definitions relating to lớn conversions between miles per hour and kilometers per hour.

What is miles per hour (mph)?

Miles per hour is a unit of tốc độ or Velocity in both US Customary Units as well as the Imperial System. It measures the number of miles traveled in an hour. The symbol for miles per hour is mph. There are 0.6213711922 mph in km/h.

What is kilometers per hour (km/h)?

Kilometers per hour is a unit of speed or Velocity in the Metric System. It measures the number of kilometers traveled in an hour. The symbol for kilometers per hour is km/h và the International spelling for this unit is kilometres per hour. There are 1.609344 km/h in mph.

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Conversion Formula

Let"s take a closer look at the conversion formula so that you can vì these conversions yourself with a calculator or with an old-fashioned pencil và paper.

The formula khổng lồ convert from mph lớn km/h is:

km/h = mph x 1.609344

Conversion Example

Next, let"s look at an example showing the work & calculations that are involved in converting from miles per hour lớn kilometers per hour (mph to km/h).

Miles per hour to lớn Kilometers per hour Conversion Example

Task: Convert 75 miles per hour lớn kilometers per hour (show work)Formula:mph x 1.609344 = km/hCalculations:75 mph x 1.609344 = 120.7008 km/hResult:75 mph is equal to 120.7008 km/h
For quick reference purposes, below is a conversion table that you can use lớn convert from mph to km/h.

Miles per hour to lớn Kilometers per hour Conversion Chart

miles per hour (mph)kilometers per hour (km/h)
1 mph1.609344 km/h
2 mph3.218688 km/h
3 mph4.828032 km/h
4 mph6.437376 km/h
5 mph8.04672 km/h
6 mph9.656064 km/h
7 mph11.265408 km/h
8 mph12.874752 km/h
9 mph14.484096 km/h
10 mph16.09344 km/h
20 mph32.18688 km/h
30 mph48.28032 km/h
40 mph64.37376 km/h
50 mph80.4672 km/h
75 mph120.7008 km/h
100 mph160.9344 km/h
250 mph402.336 km/h
500 mph804.672 km/h
750 mph1,207.008 km/h
1,000 mph1,609.344 km/h
2,500 mph4,023.36 km/h
5,000 mph8,046.72 km/h
7,500 mph12,070.08 km/h
10,000 mph16,093.44 km/h
25,000 mph40,233.6 km/h
50,000 mph80,467.2 km/h
75,000 mph120,700.8 km/h
100,000 mph160,934.4 km/h
250,000 mph402,336 km/h

The following tables provide a summary of the tốc độ or Velocity units (Per Hour, Per Minute, Per Second and Per Millisecond) within their respective measurement systems.

Per Hour

UnitSymbolMeasurement SystemDescription
inches per hourin/hUS Customary Units/Imperial System36 in/h = 1 yd/h
feet per hourft/hUS Customary Units/Imperial System1 ft/h = 12 in/h
yards per houryd/hUS Customary Units/Imperial System1 yd/h = 3 ft/h
miles per hourmphUS Customary Units/Imperial System1 mph = 5280 ft/h
millimeters per hourmm/hMetric System1 m/h = 1000 mm/h
centimeters per hourcm/hMetric System1 m/h = 100 cm/h
decimeters per hourdm/hMetric System1 m/h = 10 dm/h
meters per hourm/hMetric Systembase unit
kilometers per hourkm/hMetric System1 km/h = 1000 m/h
knotknNon-SI (International)1 knot = 1.15078 mph

Per Minute

UnitSymbolMeasurement SystemDescription
inches per minutein/mUS Customary Units/Imperial System36 in/m = 1 yd/m
feet per minuteft/mUS Customary Units/Imperial System1 ft/m = 12 in/m
yards per minuteyd/mUS Customary Units/Imperial System1 yd/m = 3 ft/m
miles per minutemi/mUS Customary Units/Imperial System1 mi/m = 5280 ft/m
millimeters per minutemm/mMetric System1 m/m = 1000 mm/m
centimeters per minutecm/mMetric System1 m/m = 100 cm/m
decimeters per minutedm/mMetric System1 m/m = 10 dm/m
meters per minutem/mMetric Systembase unit
kilometers per minutekm/mMetric System1 km/m = 1000 m/m

Per Second

UnitSymbolMeasurement SystemDescription
inches per secondin/sUS Customary Units/Imperial System36 in/s = 1 yd/s
feet per secondft/sUS Customary Units/Imperial System1 ft/s = 12 in/s
yards per secondyd/sUS Customary Units/Imperial System1 yd/s = 3 ft/s
miles per secondmi/sUS Customary Units/Imperial System1 mi/s = 5280 ft/s
millimeters per secondmm/sMetric System1 m/s = 1000 mm/s
centimeters per secondcm/sMetric System1 m/s = 100 cm/s
decimeters per seconddm/sMetric System1 m/s = 10 dm/s
meters per secondm/sMetric Systembase unit
kilometers per secondkm/sMetric System1 km/s = 1000 m/s

Per Millisecond

UnitSymbolMeasurement SystemDescription
millimeters per millisecondmm/msMetric System1 m/ms = 1000 mm/ms
centimeters per millisecondcm/msMetric System1 m/ms = 100 cm/ms
decimeters per milliseconddm/msMetric System1 m/ms = 10 dm/ms
meters per millisecondm/msMetric Systembase unit
kilometers per millisecondkm/msMetric System1 km/ms = 1000 m/ms

Note: For tốc độ or Velocity conversions, US Customary Units và the Imperial System are equivalent.

Type--Please select--AngleAreaColorData RatesDigital StorageEnergyFrequencyFuel EconomyLength / DistancePower / ElectricityPressureSpeed / VelocityTemperatureTimeVolumeWeight / Mass
From--Please select--Centimeters per hourCentimeters per millisecondCentimeters per minuteCentimeters per secondDecimeters per hourDecimeters per millisecondDecimeters per minuteDecimeters per secondFeet per hourFeet per minuteFeet per secondInches per hourInches per minuteInches per secondKilometers per hourKilometers per microsecondKilometers per millisecondKilometers per minuteKilometers per secondKnotMeters per hourMeters per millisecondMeters per minuteMeters per secondMiles per hourMiles per minuteMiles per secondMillimeters per hourMillimeters per millisecondMillimeters per minuteMillimeters per secondYards per hourYards per minuteYards per second
To--Please select--Centimeters per hourCentimeters per secondDecimeters per hourDecimeters per secondFeet per hourFeet per secondInches per hourKilometers per hourKilometers per secondKnotMeters per hourMeters per secondMiles per minuteMillimeters per hourMillimeters per secondYards per hour