Spike's Calculators

Time from a Distance in Kilometres and Speed in Miles per Hour

Calculate the time it takes to travel a certain distance in kilometres based on a speed of miles per hour.

Time from Speed and Distance
Kilometres per Hour/Miles

Distance in Kilometres km
Speed in Miles per Hour mi/hr


Distance in Miles mi
Speed in Kilometres per Hour km/hr
Time in Decimal Hours hr
Time hour min sec


  1. enter the distance in kilometres
  2. the speed in miles per hour


  1. the distance in kilometres converted to miles
  2. the miles per hour converted to kilometres per hour
  3. the time in decimal hours
  4. the time in hour, minute, and second format

time = distance ÷ speed
one one kilometre (km) = 0.621371192237334 miles (mi)
one mile per hour (mi/hr) = 1.609344 kilometres per hour (km/hr)
Example Calculation
How long will it take to drive 120 kilometres at a speed of 45 miles per hour?
First convert the kilometres to miles;
120 * 0.621371192237334 = 74.5645
120 kilometres equals 74.5645 miles

Divide the distance of  74.5645 miles by the speed of 45 miles per hour to get the time in hours;
74.5645 ÷ 45 =  1.65699
It will take 1.657 hours to travel the 120 kilometres at a speed of 45 miles per hour.
1 hr - 39 min - 25 sec

If you have any questions or comments please Contact Us
Privacy Policy
© 1998, VmNet.