Solve for time, speed or distance — with unit conversion.
Solve any Time, Speed and Distance problem in seconds — pick what you want to find (speed, time or distance), enter the two known values, and get the answer instantly. A core topic for the UPSC Quantitative Aptitude section.
First choose what you want to find — Speed, Time or Distance. Then enter the other two known values (for example, Distance and Time to find Speed) and click Calculate to get your answer instantly, along with the equivalent value in m/s or km/h.
The three values are related by one simple formula: Speed = Distance ÷ Time. This can be rearranged to find any one value if the other two are known: Distance = Speed × Time, and Time = Distance ÷ Speed.
Time, Speed and Distance (including trains, boats & streams, and races) is one of the most heavily tested Quant chapters in UPSC CSE, CDS, NDA and EPFO. Getting the base formula and unit conversions (km/h ↔ m/s) right is key to solving these quickly under exam time pressure.
Multiply the speed in km/h by 5/18 to get m/s. To convert back, multiply m/s by 18/5.
This tool solves the basic Speed = Distance ÷ Time relationship; for average speed over unequal distances, you would need to combine multiple calculations.