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Unit Conversion Calculators
Speed Converter
Convert a speed between miles per hour, kilometers per hour, meters per second, knots and feet per second.
Converted value
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About the Speed Converter
Speed can be expressed in several units depending on context — miles per hour on US roads, kilometers per hour elsewhere, meters per second in physics, knots at sea and in aviation, and feet per second in engineering.
Formula: Result = (Value × Factorfrom→m/s) ÷ Factorto→m/s
One knot equals exactly 1.852 km/h; one mph equals exactly 0.44704 m/s.
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