Speed Converter

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Convert between km/h, mph, m/s, knots, Mach and other speed units.

How it works

1. Enter value. 2. Choose source and target units. 3. Click Convert.

Advantages

6 units supported. Convert to all units simultaneously.

Common mistakes to avoid

  1. km/h vs m/s: to convert km/h to m/s, divide by 3.6, not by 3. 100 km/h = 27.78 m/s, not 33.33 m/s.
  2. Knot: 1 knot = 1 nautical mile/hour = 1.852 km/h. Don't confuse with km/h in marine or aeronautical contexts.
  3. Mach: the Mach number varies with temperature and altitude. Mach 1 at sea level ≈ 1235 km/h, but at 11,000 m ≈ 1062 km/h.

Description

Free Online Speed Converter

Our speed converter converts between various speed units: km/h, m/s, mph, knots and feet per second. Useful for sports, aviation, navigation and science.

Supported Units

  • km/h (kilometers per hour)
  • m/s (meters per second)
  • mph (miles per hour)
  • knots
  • ft/s (feet per second)

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Convert between km/h, mph, m/s, knots, Mach and other speed units.

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