Convert km/h to mph, knots, or metres per second when road, air, and lab units mix.
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Use this for road signs, aviation, and physics problems that mix speed units. Type the speed, pick the unit on the speedometer or chart, then pick the unit you want.
Everything is converted through metres per second. A knot is one international nautical mile per hour (1852 m/h). This is speed, not running pace (min/km) and not Mach number.
Value: The speed you have.
From: The unit on the speedometer, chart, or problem.
To: The unit you want back.
Result: The same speed in the To unit.
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