Unit Converter
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 45 miles per hour into kilometers per hour we have to multiply 45 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
45 mph → V(km/h)
Solve the above proportion to obtain the velocity V in kilometers per hour:
V(km/h) = 45 mph × 1.6093439999987 km/h
V(km/h) = 72.420479999942 km/h
The final result is:
45 mph → 72.420479999942 km/h
We conclude that 45 miles per hour is equivalent to 72.420479999942 kilometers per hour:
45 miles per hour = 72.420479999942 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 0.013808248716396 × 45 miles per hour.
Another way is saying that 45 miles per hour is equal to 1 ÷ 0.013808248716396 kilometers per hour.
Approximate result
For practical purposes we can round our final result to an approximate numerical value. We can say that forty-five miles per hour is approximately seventy-two point four two kilometers per hour:
45 mph ≅ 72.42 km/h
An alternative is also that one kilometer per hour is approximately zero point zero one four times forty-five 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
miles per hour (mph) | kilometers per hour (km/h) |
---|---|
46 miles per hour | 74.03 kilometers per hour |
47 miles per hour | 75.639 kilometers per hour |
48 miles per hour | 77.249 kilometers per hour |
49 miles per hour | 78.858 kilometers per hour |
50 miles per hour | 80.467 kilometers per hour |
51 miles per hour | 82.077 kilometers per hour |
52 miles per hour | 83.686 kilometers per hour |
53 miles per hour | 85.295 kilometers per hour |
54 miles per hour | 86.905 kilometers per hour |
55 miles per hour | 88.514 kilometers per hour |