Convert Mph To Km/h - Conversion Of Measurement Units

Convert mile/hour to kilometre/hour

mph

km/h

More information from the unit converter

How many mph in 1 km/h? The answer is 0.62137119223733. We assume you are converting between mile/hour and kilometre/hour. You can view more details on each measurement unit: mph or km/h The SI derived unit for speed is the meter/second. 1 meter/second is equal to 2.2369362920544 mph, or 3.6 km/h. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between miles/hour and kilometers/hour. Type in your own numbers in the form to convert the units!

Quick conversion chart of mph to km/h

1 mph to km/h = 1.60934 km/h

5 mph to km/h = 8.04672 km/h

10 mph to km/h = 16.09344 km/h

15 mph to km/h = 24.14016 km/h

20 mph to km/h = 32.18688 km/h

25 mph to km/h = 40.2336 km/h

30 mph to km/h = 48.28032 km/h

40 mph to km/h = 64.37376 km/h

50 mph to km/h = 80.4672 km/h

Want other units?

You can do the reverse unit conversion from km/h to mph, or enter any two units below:

Enter two units to convert

From:

To:

Common speed conversions

• mph to hectometer/hour
• mph to centimeter/day
• mph to league/minute
• mph to dekameter/day
• mph to millimeter/day
• mph to furlong/day
• mph to millimeter/100 microsecond
• mph to yard/minute
• mph to nautical mile/second
• mph to dekameter/second

Definition: Mile/hour

Miles per hour is a unit of speed, expressing the number of international miles covered per hour. It is commonly abbreviated in everyday use in the United States, the United Kingdom, and elsewhere to mph or MPH, although mi/h is sometimes used in technical publications.

Definition: Kilometer/hour

The kilometre per hour (American English: kilometer per hour) is a unit of both speed (scalar) and velocity (vector). The km/h is the worldwide most commonly used speed unit on road signs and car speedometers.

Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!

Convert · Metric · Speed · Dates · Salary · Chemistry · Forum · Search · Privacy · Bibliography · Contact © 2025 ConvertUnits.com