## Conversion formula

The conversion factor from kilometers per hour to miles per hour is 0.62137119223783, which means that 1 kilometer per hour is equal to 0.62137119223783 miles per hour:

1 km/h = 0.62137119223783 mph

To convert 30 kilometers per hour into miles per hour we have to multiply 30 by the conversion factor in order to get the velocity amount from kilometers per hour to miles per hour. We can also form a simple proportion to calculate the result:

1 km/h → 0.62137119223783 mph

30 km/h → V(mph)

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

V(mph) = 30 km/h × 0.62137119223783 mph

V(mph) = 18.641135767135 mph

The final result is:

30 km/h → 18.641135767135 mph

We conclude that 30 kilometers per hour is equivalent to 18.641135767135 miles per hour:

30 kilometers per hour = 18.641135767135 miles per hour

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile per hour is equal to 0.053644799999957 × 30 kilometers per hour.

Another way is saying that 30 kilometers per hour is equal to 1 ÷ 0.053644799999957 miles per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that thirty kilometers per hour is approximately eighteen point six four one miles per hour:

30 km/h ≅ 18.641 mph

An alternative is also that one mile per hour is approximately zero point zero five four times thirty kilometers per hour.

## Conversion table

### kilometers per hour to miles per hour chart

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

kilometers per hour (km/h) miles per hour (mph)
31 kilometers per hour 19.263 miles per hour
32 kilometers per hour 19.884 miles per hour
33 kilometers per hour 20.505 miles per hour
34 kilometers per hour 21.127 miles per hour
35 kilometers per hour 21.748 miles per hour
36 kilometers per hour 22.369 miles per hour
37 kilometers per hour 22.991 miles per hour
38 kilometers per hour 23.612 miles per hour
39 kilometers per hour 24.233 miles per hour
40 kilometers per hour 24.855 miles per hour