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Speed Converter

Convert between various speed and velocity units instantly. From miles per hour to kilometers per hour, knots to mph, and meters per second - all with precision and accuracy.

MPH ↔ KM/H

Formula: km/h = mph × 1.60934

Formula: mph = km/h ÷ 1.60934

Knots ↔ MPH

Formula: mph = knot × 1.15078

Formula: knot = mph ÷ 1.15078

M/S ↔ KM/H

Formula: km/h = m/s × 3.6

Formula: m/s = km/h ÷ 3.6

MPH ↔ M/S

Formula: m/s = mph × 0.44704

Formula: mph = m/s ÷ 0.44704

Knots ↔ KM/H

Formula: km/h = knot × 1.852

Formula: knot = km/h ÷ 1.852

FT/S ↔ MPH

Formula: mph = ft/s × 0.681818

Formula: ft/s = mph ÷ 0.681818

About Speed Conversion

Speed and velocity conversion is essential in transportation, aviation, maritime navigation, sports, and physics. Different countries and industries use different speed measurements, making conversion tools critical for safety and communication.

Common Speed Units

  • Land Travel: Miles per Hour (mph), Kilometers per Hour (km/h)
  • Maritime & Aviation: Knots (nautical miles per hour)
  • Scientific: Meters per Second (m/s), Feet per Second (ft/s)

Conversion Factors

  • 1 mph = 1.60934 km/h
  • 1 knot = 1.15078 mph = 1.852 km/h (exact)
  • 1 m/s = 3.6 km/h = 2.23694 mph
  • 1 ft/s = 0.681818 mph = 1.09728 km/h

Applications

  • Automotive: Converting speedometer readings between mph and km/h
  • Aviation: Flight speed, wind speed, and navigation calculations
  • Maritime: Ship speed in knots, ocean current measurements
  • Sports: Running pace, cycling speed, athletics records
  • Physics & Engineering: Velocity calculations in scientific experiments
  • Weather: Wind speed reporting in different units