The speed distance time calculator solves the classic motion equation distance = speed × time.
About this calculator
The speed distance time calculator solves the classic motion equation distance = speed × time. Pick what you want to find — speed, distance, or time — then enter the other two values in SI units.
Example: a runner covers 100 m in 10 s. Choose speed, enter distance 100 and time 10. Speed comes out as 10 m/s (36 km/h). To find how far a car at 25 m/s travels in 8 s, select distance and enter speed and time.
This is separate from the engineering speed converter — here you solve the full triangle for homework problems. Pair it with the [[velocity]] calculator for acceleration (v = u + at), the [[kinetic-energy]] calculator once you know speed, and the [[momentum]] calculator for moving objects. The [[force]] calculator links acceleration to mass when motion changes.
Common uses
- CBSE and ICSE Class 9–10 motion problems
- Finding travel time for a known distance and average speed
- Converting race splits into m/s for track analysis
- Checking train or bus timetable estimates
- Introductory physics labs with metre sticks and stopwatches
Frequently asked questions
How do you calculate speed from distance and time?
Divide distance by time: speed = distance ÷ time. Example: 200 m in 40 s gives 5 m/s. Select speed, enter 200 m and 40 s, and the calculator returns 5 m/s.
What is the speed of an object that travels 150 m in 12 seconds?
Speed = 150 ÷ 12 = 12.5 m/s. Enter distance 150, time 12, and choose solve for speed. That equals 45 km/h if you multiply by 3.6.
How far does a car travel at 20 m/s for 15 seconds?
Distance = speed × time = 20 × 15 = 300 m. Select distance, enter speed 20 m/s and time 15 s. The result is 0.3 km.
How is this different from the engineering speed calculator?
This tool solves the full speed–distance–time triangle for any unknown. The engineering speed calculator mainly converts between km/h, mph, and m/s. Use this one for motion homework.