Average speed calculator
Calculate average speed, distance or time of a trip: enter two values and find the third, in km/h, m/s and mph.
How to useSpeed, distance and time
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Average speed calculator: what it is for
Choose what you want to find and fill in the other two values. The calculator uses the formula speed = distance ÷ time and converts the result to meters per second, miles per hour and pace in minutes per kilometer.
Time accepts the formats h:mm and h:mm:ss.
How to use
- Choose speed, time or distance.
- Fill in the other two values.
- See the result and the conversions.
When to use it
- Estimate the time of a car trip.
- Solve physics exercises.
- Find the average speed of a run or bike ride.
Frequently asked questions
What is the average speed formula?
Average speed = distance ÷ time. If you traveled 300 km in 4 hours, the average speed was 75 km/h. For time, use distance ÷ speed; for distance, speed × time.
How do I convert km/h to m/s?
Divide by 3.6. 72 km/h is 20 m/s. To go the other way, multiply m/s by 3.6.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 are free.