# Average kilometres per hour speed from distance traveled and time Calculate your average speed in kilometres per hour based on distance travelled in a certain time period. Results include kilometre conversions to miles for distance and average speed.

##### Conversion Factor for Kilometres to Miles:
`one km = 0.6213711922373338 miles`
##### Example calculation:
```distance = 154 kilometres
the time it took to cover this distance = 7 hours, 12 minutes and 34 seconds
Since you are trying to get the average speed per hour it makes sense to convert the time into decimal hours. There are 60 minutes in an hour. Divide minutes by 60 --- 12 ÷ 60 = 0.2 hr
There are 60 * 60 = 3600 seconds in an hour. Divide seconds by 3600 --- 34 ÷ 3600 = 0.0094 hours. Add the amounts together 7 + 0.2 + 0.0094 = 7.2094 ```
7 hours, 12 minutes and 34 seconds in decimal format = 7.2094 hr
Divide the distance by this amount to get the km/hr --- 154 ÷ 7.2094 = 21.361
If you forget about the seconds in this case and use 7.2--- 21.3889 not much of a difference!
Your average speed of travel = 21.361 kilometres an hour

### Speed from Time and Distance

Distance in Kilometres km
Decimal Rounding #
Time hr min sec

#### Results:

 Speed in Kilometres/Hour km/hr Distance Converted to Miles km Speed in Miles/Hour mi/hr

#### Calculation

1. enter the distance in kilometres
2. the time in hour minutes and seconds

#### Result

1. average speed in kilometres per hour
2. kilometre distance converted into miles
3. average speed in miles per hour