I am calculating the distance and speed as below.

```
totalDistance=totalDistance+[newLocation distanceFromLocation:self
->tempOldLocation];
distanceLabel.text= [NSString stringWithFormat:@"%.2f km", (totalDistance
/1000)];
self->tempOldLocation=newLocation;

```

Calculating Speed:

```
CLLocationDistance distanceChange = [newLocation getDistanceFrom:oldLocation];
NSTimeInterval sinceLastUpdate = [newLocation.timestamp 
       timeIntervalSinceDate:oldLocation.timestamp];
double calculatedSpeed = distanceChange / sinceLastUpdate;

```

I want to calculate the speed in km/h. Please suggest me any way to calculate the speed in km/h.