100 kilometres per hour
100 km/hSpeed · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Speed
Just how fast is 100 kilometres per hour?
Road & rail
100 km/h
27.778 m/smetres per second
62.137 mphmiles per hour
Mach 0.080985Mach
9.2657 × 10⁻⁸ cspeed of light
01
100 kilometres per hour100 km/hSpeed · definition
02
Family car100 km/hExample cruising speed · example
Each track shows distance covered in the same second. The small illustrations identify the movers; their sizes are schematic.
A little perspective
The speed of 100 kilometres per hour and the example cruising speed of Family car are approximately the same.
Measurements, assumptions & sources +
100 kilometres per hour
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Family car
A 4.5 m long car with 1,500 kg mass; vehicle models and loading vary.
Defined examples — our methodology
The marked example cruising speed is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
The visual compares speed with example cruising speed. The records below preserve each value’s basis and caveats.
Family car
100 km/hExample cruising speed · example
A 4.5 m long car with 1,500 kg mass; vehicle models and loading vary.
- Comparing
- Speed ↔ Example cruising speed
- Relative size
- The two selected measurements are approximately equal.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Family car is labelled example; treat the displayed value as a comparison anchor rather than false precision.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
A little smaller. A little larger.