Speed Distance Time Calculator
Calculate any of speed, distance, or time when given the other two values. Enter values for instant results with step-by-step formulas.
Reviewed by Daniel Agrici, Founder & Lead Developer
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
Speed = Distance / Time | Distance = Speed × Time | Time = Distance / Speed
Enter any two values to calculate the third. Leave one field empty to solve for it.
Worked Examples
Example 1: Road trip
Problem:60 mph for 150 miles
Solution:Time = 150/60 = 2.5 hours
Result:2.5 hours
Example 2: Solving for required speed
Problem:You need to cover 240 km and have exactly 3 hours available before an appointment. What average speed do you need to maintain?
Solution:Speed = Distance / Time = 240 km / 3 hours
Result:80 km/h required average speed
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy