Question 1

What wind speed units are used?

Accepted Answer

km/h (metric), mph (US), knots (nautical), m/s (scientific), Beaufort scale (observational).

Question 2

How do I convert between wind speed units?

Accepted Answer

1 m/s = 3.6 km/h = 2.24 mph = 1.94 knots. Beaufort varies: Force 5 = 8-10.7 m/s.

Question 3

What's the fastest speed possible?

Accepted Answer

The speed of light (299,792,458 m/s or about 670 million mph) is the universal speed limit. Nothing with mass can reach it.

Question 4

Why do pilots and sailors use knots?

Accepted Answer

One knot = one nautical mile per hour. Nautical miles relate directly to Earth's latitude (1 nm = 1 minute of latitude), simplifying navigation.

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