Kilometers per Hour to Kilometers per Second Converter

Convert speed from kilometers per hour (km/h) to kilometers per second (km/s) with our easy-to-use calculator.

Result: 1 kilometers per second

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Understanding Speed Conversion

Converting between kilometers per hour (km/h) and kilometers per second (km/s) is a common task in physics and engineering calculations. The conversion is based on the relationship between hours and seconds.

Conversion Formula

km/s = km/h ÷ 3,600

Why 3,600?

The number 3,600 comes from:

  • 1 hour = 60 minutes
  • 1 minute = 60 seconds
  • Therefore, 1 hour = 60 × 60 = 3,600 seconds

Common Speed References

  • Average walking speed: 5 km/h (0.001389 km/s)
  • Highway speed limit: 100 km/h (0.027778 km/s)
  • Speed of sound: 1,235 km/h (0.343056 km/s)
  • Earth's escape velocity: 40,280 km/h (11.2 km/s)