🚗 Speed Calculator
Calculate speed, distance, or time using the physics formula: Speed = Distance ÷ Time.
🚗 Speed Calculator
📊 Result
Speed Calculator – Speed, Distance & Time
The Speed Calculator is based on the fundamental physics formula: Speed = Distance ÷ Time. You can solve for any one of the three variables when the other two are known. This makes it useful for travel planning, sports, physics problems, and more.
The Speed Distance Time Triangle
Distance = Speed × Time
Time = Distance ÷ Speed
Unit Conversions
- 1 km/h = 0.278 m/s = 0.621 mph
- 1 mph = 1.609 km/h = 0.447 m/s
- 1 m/s = 3.6 km/h = 2.237 mph
Real-World Examples
- Road trip planning: Calculate travel time for a 500 km journey at 80 km/h = 6.25 hours
- Running pace: If you run 10 km in 50 minutes, your speed is 12 km/h
- Aviation: A plane traveling at 800 km/h covers 4800 km in 6 hours
Average Speed vs Instantaneous Speed
Average speed = Total distance / Total time (what this calculator computes). Instantaneous speed is the speed at any specific moment (shown on a speedometer).
Frequently Asked Questions
Select "Calculate Time", enter 60 km/h as speed and 300 km as distance. Time = 300 ÷ 60 = 5 hours exactly.
Select "Calculate Speed", enter 200 km and 3 hours 0 minutes. Speed = 200 ÷ 3 = 66.67 km/h.
Multiply km/h by 0.621371. For example, 100 km/h = 62.14 mph. Our calculator automatically shows conversions between units in the results.
Yes! Average walking speed is about 5 km/h. If you walk 3 km, it takes approximately 36 minutes. Use the Speed mode and enter your distance and time to find your exact walking speed.