Case 1
- How far did you travel? (km)
- 100km
- How long did it take? (hours)
- 2h
50.00km/h
Open with these valuesSpeed, Distance and Time Calculator
50.00km/h
Result: 50.00 km/hSpeed is distance divided by time, so 100 km in 2 hours is 50 km/h. This is the average over the whole trip, not what a speedometer shows at any moment. Enter kilometres and hours to read km/h; the pace in minutes per kilometre is simply 60 divided by that.
Worked examples
Case 2
- How far did you travel? (km)
- 42.195km
- How long did it take? (hours)
- 3.5h
12.06km/h
Open with these valuesCase 3
- How far did you travel? (km)
- 10km
- How long did it take? (hours)
- 1h
10.00km/h
Open with these valuesHow it's calculated
v = distance ÷ time
- StepEnter the distance in kilometres.
- StepEnter the elapsed time in hours — 90 minutes is 1.5.
- ResultRead the average speed in km/h; divide by 3.6 for m/s.
Reference table
| Distance, time | Pace (min/km) | Speed (km/h) |
|---|---|---|
| 0, 1 | — | 0.00 |
| 5, 0.5 | 6.00 | 10.00 |
| 10, 1 | 6.00 | 10.00 |
| 42.195, 3.5 | 4.98 | 12.06 |
| 100, 2 | 1.20 | 50.00 |
Questions
How do I calculate speed from distance and time?
Divide the distance by the time: speed = distance ÷ time. With kilometres and hours the answer comes out in km/h. For example, 100 km covered in 2 hours is 100 ÷ 2 = 50 km/h.
Is this average speed or instantaneous speed?
It is average speed — total distance divided by total time for the whole trip. It does not capture how fast you were going at any single moment, so stops, acceleration, and traffic are smoothed into one figure. A speedometer shows instantaneous speed instead.
What is pace and how is it different from speed?
Pace is the inverse of speed: instead of distance per hour it says how many minutes each kilometre takes, pace = 60 ÷ speed. At 50 km/h that is 1.2 min/km. Runners and cyclists prefer pace because it maps directly onto effort over a known distance.
How do I find distance or time instead of speed?
Rearrange the same relationship: distance = speed × time, and time = distance ÷ speed. At 50 km/h for 3 hours you cover 150 km, and 150 km at 50 km/h takes 3 hours. The solve buttons on the distance and time fields do this for you.
How do I convert km/h into mph or m/s?
Multiply km/h by 0.621 to get miles per hour, or divide by 3.6 to get metres per second. So 50 km/h is about 31.1 mph, or roughly 13.9 m/s.
Sources and last check
Information, not professional advice.