Online calculator to convert miles per hour to kilometers per second (mph to km/s) 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 mph to km/s
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 miles per hour and kilometers per second.
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 2,236.9362920544 mph in km/s.
What is kilometers per second (km/s)?
Kilometers per second is a unit of Speed or Velocity in the Metric System. It measures the number of kilometers traveled in a second. The symbol for kilometers per second is km/s and the International spelling for this unit is kilometres per second. There are 0.00044704 km/s in mph.
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 mph to km/s is:
km/s = mph x 0.00044704
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from miles per hour to kilometers per second (mph to km/s).
Miles per hour to Kilometers per second Conversion Example
Task: Convert 2,500 miles per hour to kilometers per second (show work) Formula: mph x 0.00044704 = km/s Calculations: 2,500 mph x 0.00044704 = 1.1176 km/s Result: 2,500 mph is equal to 1.1176 km/s
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from mph to km/s.
Miles per hour to Kilometers per second Conversion Chart
| miles per hour (mph) | kilometers per second (km/s) |
|---|---|
| 1 mph | 0.00044704 km/s |
| 2 mph | 0.00089408 km/s |
| 3 mph | 0.00134112 km/s |
| 4 mph | 0.00178816 km/s |
| 5 mph | 0.0022352 km/s |
| 6 mph | 0.00268224 km/s |
| 7 mph | 0.00312928 km/s |
| 8 mph | 0.00357632 km/s |
| 9 mph | 0.00402336 km/s |
| 10 mph | 0.0044704 km/s |
| 20 mph | 0.0089408 km/s |
| 30 mph | 0.0134112 km/s |
| 40 mph | 0.0178816 km/s |
| 50 mph | 0.022352 km/s |
| 75 mph | 0.033528 km/s |
| 100 mph | 0.044704 km/s |
| 250 mph | 0.11176 km/s |
| 500 mph | 0.22352 km/s |
| 750 mph | 0.33528 km/s |
| 1,000 mph | 0.44704 km/s |
| 2,500 mph | 1.1176 km/s |
| 5,000 mph | 2.2352 km/s |
| 7,500 mph | 3.3528 km/s |
| 10,000 mph | 4.4704 km/s |
| 25,000 mph | 11.176 km/s |
| 50,000 mph | 22.352 km/s |
| 75,000 mph | 33.528 km/s |
| 100,000 mph | 44.704 km/s |
| 250,000 mph | 111.76 km/s |
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.
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