Question 1

How do I calculate speed?

Accepted Answer

Speed = distance / time. Keep units consistent, e.g., miles per hour or meters per second.

Question 2

How do I convert between mph, km/h, and m/s?

Accepted Answer

Multiply mph by 1.60934 to get km/h; m/s x 3.6 = km/h; mph = 2.23694 x m/s.

Question 3

What is average speed?

Accepted Answer

Total distance divided by total time, not the average of speeds unless time at each speed is equal.

Question 4

Can I compute time or distance instead?

Accepted Answer

Yes—rearrange: time = distance/speed, distance = speed x time.

Question 5

What about pace for running?

Accepted Answer

Pace is the inverse of speed: minutes per mile or kilometer.

Speed Calculator — Distance, Time & Velocity Calculator