Speed, Distance & Time Calculator
Find travel time, average speed or distance from the other two — km, miles, km/h and mph.
Runs in your browser — your data never leaves your device.
About the Speed, Distance & Time Calculator
How long will the drive take? What was my average speed? Choose what to find and enter the other two values. Useful for trip planning, physics homework and checking delivery times.
How to use the Speed, Distance & Time Calculator
- Choose whether to find time, speed or distance.
- Enter the other two values and pick the units.
- Click Calculate.
Formula
Speed = distance ÷ time, time = distance ÷ speed, distance = speed × time. Units are converted through metres and seconds.
Examples
- 375 km at 100 km/h → 3 h 45 min.
- 375 km in 4 h 30 min → average 83.33 km/h.
Frequently asked questions
Does it include stops?
No — it assumes a steady average speed. Add time for breaks, traffic and tolls.