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Convert kilometer per hour to kilometer per second

Here you can quickly calculate how many kilometer per second fit in one kilometer per hour.
write a number and we convert instantly
swap direction → m/s

- scroll: formula · table · questions -

  • 1 km/h = 0.000278 km/s
  • 1 km/s = 3600 km/h

Example: kilometer per hour to kilometer per second

  • 1 kilometer per hour = 0.000278 kilometer per second

Kilometer per hour to kilometer per second conversion table

kilometer per hour kilometer per second
1 0.000278
2 0.000556
5 0.001389
10 0.002778
20 0.005556
50 0.013889
100 0.027778

Kilometer per hour to kilometer per second formula

To convert kilometer per hour to kilometer per second, divide by 3600.

1 km/h = 0.000278 km/s
Example: 1 kilometer per hour = 0.000278 kilometer per second

Common speed conversion mistakes

  • A knot is one nautical mile per hour, exactly 1.852 km/h, not 1 km/h. A boat doing 20 knots travels at about 37 km/h. Multiply knots by 1.852 to get km/h.
  • Between m/s and km/h the factor is 3.6, an hour has 3,600 seconds and a kilometer 1,000 meters. Multiply m/s by 3.6 to get km/h (10 m/s = 36 km/h) and divide going the other way. Flipping the factor produces a thirteen-fold error.
  • UK and US road signs show miles per hour, not km/h. 1 mph is about 1.609 km/h, so a '70' limit means about 113 km/h. Multiply mph by 1.6 to think in km/h.

Quick kilometer per hour and kilometer per second conversion quiz

Score: 0

2 kilometer per hour equals 0.00556 kilometer per second.

Correct answer: 2 kilometer per hour = 0.000556 kilometer per second.

20 kilometer per hour equals 0.00556 kilometer per second.

Correct answer: 20 kilometer per hour = 0.00556 kilometer per second.

100 kilometer per hour equals 0.00556 kilometer per second.

Correct answer: 100 kilometer per hour = 0.0278 kilometer per second.

More speed conversions