Conversion formula

The conversion factor from miles per hour to kilometers per hour is 1.6093439999987, which means that 1 mile per hour is equal to 1.6093439999987 kilometers per hour:

1 mph = 1.6093439999987 km/h

To convert 142 miles per hour into kilometers per hour we have to multiply 142 by the conversion factor in order to get the velocity amount from miles per hour to kilometers per hour. We can also form a simple proportion to calculate the result:

1 mph → 1.6093439999987 km/h

142 mph → V_(km/h)

Solve the above proportion to obtain the velocity V in kilometers per hour:

V_(km/h) = 142 mph × 1.6093439999987 km/h

V_(km/h) = 228.52684799982 km/h

The final result is:

142 mph → 228.52684799982 km/h

We conclude that 142 miles per hour is equivalent to 228.52684799982 kilometers per hour:

142 miles per hour = 228.52684799982 kilometers per hour

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer per hour is equal to 0.0043758534664636 × 142 miles per hour.

Another way is saying that 142 miles per hour is equal to 1 ÷ 0.0043758534664636 kilometers per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred forty-two miles per hour is approximately two hundred twenty-eight point five two seven kilometers per hour:

142 mph ≅ 228.527 km/h

An alternative is also that one kilometer per hour is approximately zero point zero zero four times one hundred forty-two miles per hour.

Conversion table

miles per hour to kilometers per hour chart

For quick reference purposes, below is the conversion table you can use to convert from miles per hour to kilometers per hour