Average Speed Calculator
speed = distance / time. Pick units and read average speed in mph or km/h.
Result
Average speed
57.14 mph
91.96 km/h.
- Distance200 mi
- Total time3h 30m (3.500 hr)
- mph57.14
- km/h91.96
Step-by-step
- Total time in hours: 3 + 30/60 = 3.500 hr.
- Speed = distance / time = 200 / 3.500 = 57.14 mph.
How to use this calculator
- Enter distance and unit.
- Enter total elapsed time including breaks.
- Read mph and km/h.
About this calculator
Average speed is total distance divided by total time — including stops, traffic, and rest breaks. Different from "instantaneous speed" (what your speedometer reads). For a 3-hour drive covering 200 miles, average speed is 66.7 mph regardless of how fast you went at any moment.
Frequently asked
For trip planning, yes — that's the realistic figure. For driving performance, only count time in motion.
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