100 mph = 160 kph (approx.)
The formula to convert miles to km100 mi*
1.609344 km
1 mi
=
160.9344 km
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To convert miles per hour to kilometres per hour, multiply by 1.609344. In this instance, 25 x 1.609344 = 40.2336. Therefore, 25 miles per hour is equal to 40.2336 kilometres per hour.
There are 1.609344 kilometres in one mile. therefore, 40 miles is equal to 40 x 1.609344 = 64.37376 kilometres per hour.
100 miles per hour = 100*1.609344 kilometres per hour = 160.9344 kilometres per hour = 160.9344/3600 kilometres per second = 0.0447 km per sec (approx).
To convert from kilometres per hour to miles per hour, divide by 1.609344. In this case, rounded to two decimal places, 135 kilometres per hour is equal to 135/1.609344 = 83.89 miles per hour.
24 kilometres/hour /1.852 = 12.96 knots