Express 90 kilometers per hour in miles per hour

To convert from kilometers per hour to miles per hour, we need to multiply the value in kilometers per hour by the conversion factor of 0.621371.

So, 90 kilometers per hour is equal to 90 * 0.621371 = 55.9239 miles per hour.

Therefore, 90 kilometers per hour is approximately equal to 55.9239 miles per hour.