20 kilometres per hour
5.556 m/sSpeed · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Speed
Just how fast is 20 kilometres per hour?
On foot
20 km/h
5.5556 m/smetres per second
12.427 mphmiles per hour
Mach 0.016197Mach
1.8531 × 10⁻⁸ cspeed of light
01
20 kilometres per hour5.556 m/sSpeed · definition
02
Pedal-powered rail trolley5 m/sDefined operating speed · defined specimen · range 3 m/s–7 m/s
Each track shows distance covered in the same second. The small illustrations identify the movers; their sizes are schematic.
A little perspective
20 kilometres per hour moves about 1.11 times as fast as Pedal-powered rail trolley.
Measurements, assumptions & sources +
20 kilometres per hour
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Pedal-powered rail trolley
A defined four-seat pedal rail trolley 2.4 m long, 250 kg ready to ride and travelling at 5 m/s. Commercial rail bikes differ; length excludes couplers and the mass excludes riders.
The marked defined operating speed is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
The visual compares speed with defined operating speed. The records below preserve each value’s basis and caveats.
Pedal-powered rail trolley
5 m/sDefined operating speed · defined specimen · range 3 m/s–7 m/s
A defined four-seat pedal rail trolley 2.4 m long, 250 kg ready to ride and travelling at 5 m/s. Commercial rail bikes differ; length excludes couplers and the mass excludes riders.
- Comparing
- Speed ↔ Defined operating speed
- Relative size
- 20 kilometres per hour is larger on this measurement by a factor of about 1.11. 20 kilometres per hour's selected measurement is approximately 11.1% greater than Pedal-powered rail trolley's.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Pedal-powered rail trolley uses a 5 m/s central value within a recorded range of 3 m/s–7 m/s.
- Pedal-powered rail trolley is labelled defined specimen; treat the displayed value as a comparison anchor rather than false precision.
- The recorded ranges overlap, so the ordering can vary even though the central values differ.
Change your perspective
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Choose a suggestion to redraw the comparison, or open its page to learn what it is.
A little smaller. A little larger.