How do I convert km/h to mph?

Divide the km/h value by 1.60934 to get mph. For example, 100 km/h ÷ 1.60934 = 62.14 mph.

A knot is a unit of speed equal to one nautical mile per hour (1.852 km/h or 1.151 mph). It is used in aviation and maritime navigation.

What is the speed of light in different units?

The speed of light is approximately 299,792,458 m/s, 1,079,252,849 km/h, or 670,616,629 mph.

Mach 1 is the speed of sound, approximately 343 m/s or 1,235 km/h or 767 mph at sea level and 20°C.

Convert between km/h, mph, m/s, knots, and ft/s.

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1 km/h = 0.621 mph. 1 knot = 1.852 km/h (used in aviation and marine). 1 m/s = 3.6 km/h. The speed of sound is about 343 m/s or 1,235 km/h.