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Convert kilometer per second to kilometer per hour

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

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

Example: kilometer per second to kilometer per hour

  • 1 kilometer per second = 3600 kilometer per hour

Kilometer per second to kilometer per hour conversion table

kilometer per second kilometer per hour
1 3600
2 7200
5 18000
10 36000
20 72000
50 180000
100 360000

Kilometer per second to kilometer per hour formula

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

1 km/s = 3600 km/h
Example: 1 kilometer per second = 3600 kilometer per hour

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 second and kilometer per hour conversion quiz

Score: 0

50 kilometer per second equals 3.6e+4 kilometer per hour.

Correct answer: 50 kilometer per second = 1.8e+5 kilometer per hour.

100 kilometer per second equals 3.6e+5 kilometer per hour.

Correct answer: 100 kilometer per second = 3.6e+5 kilometer per hour.

20 kilometer per second equals 1.44e+4 kilometer per hour.

Correct answer: 20 kilometer per second = 7.2e+4 kilometer per hour.

2 kilometer per hour equals 0.000111 kilometer per second.

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

10 kilometer per second equals 3.6e+3 kilometer per hour.

Correct answer: 10 kilometer per second = 3.6e+4 kilometer per hour.

More speed conversions