Online calculator to convert kilometers per hour to miles per hour (km/h to mph) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Speed or Velocity units.
Conversion Calculator
Enter your value in the conversion calculator below.
Convert km/h to mph
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between kilometers per hour and miles per hour.
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 and the International spelling for this unit is kilometres per hour. There are 1.609344 km/h in mph.
What is miles per hour (mph)?
Miles per hour is a unit of Speed 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.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from km/h to mph is:
mph = km/h ÷ 1.609344
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from kilometers per hour to miles per hour (km/h to mph).
Kilometers per hour to Miles per hour Conversion Example
Task: Convert 2,500 kilometers per hour to miles per hour (show work) Formula: km/h ÷ 1.609344 = mph Calculations: 2,500 km/h ÷ 1.609344 = 1,553.4279805933 mph Result: 2,500 km/h is equal to 1,553.4279805933 mph
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from km/h to mph.
Kilometers per hour to Miles per hour Conversion Chart
| kilometers per hour (km/h) | miles per hour (mph) |
|---|---|
| 1 km/h | 0.6213711922 mph |
| 2 km/h | 1.2427423845 mph |
| 3 km/h | 1.8641135767 mph |
| 4 km/h | 2.4854847689 mph |
| 5 km/h | 3.1068559612 mph |
| 6 km/h | 3.7282271534 mph |
| 7 km/h | 4.3495983457 mph |
| 8 km/h | 4.9709695379 mph |
| 9 km/h | 5.5923407301 mph |
| 10 km/h | 6.2137119224 mph |
| 20 km/h | 12.4274238447 mph |
| 30 km/h | 18.6411357671 mph |
| 40 km/h | 24.8548476895 mph |
| 50 km/h | 31.0685596119 mph |
| 75 km/h | 46.6028394178 mph |
| 100 km/h | 62.1371192237 mph |
| 250 km/h | 155.3427980593 mph |
| 500 km/h | 310.6855961187 mph |
| 750 km/h | 466.028394178 mph |
| 1,000 km/h | 621.3711922373 mph |
| 2,500 km/h | 1,553.4279805933 mph |
| 5,000 km/h | 3,106.8559611867 mph |
| 7,500 km/h | 4,660.28394178 mph |
| 10,000 km/h | 6,213.7119223733 mph |
| 25,000 km/h | 15,534.2798059333 mph |
| 50,000 km/h | 31,068.5596118667 mph |
| 75,000 km/h | 46,602.8394178 mph |
| 100,000 km/h | 62,137.1192237334 mph |
| 250,000 km/h | 155,342.7980593335 mph |
Related Units
The following tables provide a summary of the Speed or Velocity units (Per Hour, Per Minute, Per Second and Per Millisecond) within their respective measurement systems.
Per Hour
| Unit | Symbol | Measurement System |
|---|---|---|
| inches per hour | in/h | US Customary Units/Imperial System |
| feet per hour | ft/h | US Customary Units/Imperial System |
| yards per hour | yd/h | US Customary Units/Imperial System |
| miles per hour | mph | US Customary Units/Imperial System |
| millimeters per hour | mm/h | Metric System |
| centimeters per hour | cm/h | Metric System |
| decimeters per hour | dm/h | Metric System |
| meters per hour | m/h | Metric System |
| kilometers per hour | km/h | Metric System |
| knot | kn | Non-SI (International) |
Per Minute
| Unit | Symbol | Measurement System |
|---|---|---|
| inches per minute | in/m | US Customary Units/Imperial System |
| feet per minute | ft/m | US Customary Units/Imperial System |
| yards per minute | yd/m | US Customary Units/Imperial System |
| miles per minute | mi/m | US Customary Units/Imperial System |
| millimeters per minute | mm/m | Metric System |
| centimeters per minute | cm/m | Metric System |
| decimeters per minute | dm/m | Metric System |
| meters per minute | m/m | Metric System |
| kilometers per minute | km/m | Metric System |
Per Second
| Unit | Symbol | Measurement System |
|---|---|---|
| inches per second | in/s | US Customary Units/Imperial System |
| feet per second | ft/s | US Customary Units/Imperial System |
| yards per second | yd/s | US Customary Units/Imperial System |
| miles per second | mi/s | US Customary Units/Imperial System |
| millimeters per second | mm/s | Metric System |
| centimeters per second | cm/s | Metric System |
| decimeters per second | dm/s | Metric System |
| meters per second | m/s | Metric System |
| kilometers per second | km/s | Metric System |
Per Millisecond
| Unit | Symbol | Measurement System |
|---|---|---|
| millimeters per millisecond | mm/ms | Metric System |
| centimeters per millisecond | cm/ms | Metric System |
| decimeters per millisecond | dm/ms | Metric System |
| meters per millisecond | m/ms | Metric System |
| kilometers per millisecond | km/ms | Metric System |
Note: For Speed or Velocity conversions, US Customary Units and the Imperial System are equivalent.
Advertisements