Speed Calculator
Calculate speed, distance, and time. Convert between different speed units including mph, km/h, m/s, and knots. Perfect for physics, sports, and travel calculations.
Speed Calculator
Speed Results
Enter values to calculate speed, distance, or time
About the Speed Calculator
Our free speed calculator finds speed, distance, or time when you know the other two. Use the formula Speed = Distance ÷ Time. Enter any two values and get the third. Useful for travel, physics, and sport. Results in km/h, m/s, mph, and other units.
Frequently Asked Questions
How do I calculate speed from distance and time?
Speed = Distance ÷ Time. For example, 100 km in 2 hours = 50 km/h. This calculator does it for you.
Can I get the result in mph or m/s?
Yes. The calculator shows speed in km/h and can convert to other units depending on the inputs you use.
What if I have distance and speed?
Time = Distance ÷ Speed. Enter distance and speed and leave time blank (or use the calculator’s option to solve for time).