Question 1

What is a statute vs nautical mile?

Accepted Answer

Statute (land) mile = 1.609 km. Nautical mile = 1.852 km. Nautical mile is about 15% longer than statute mile.

Question 2

When do I use nautical vs statute miles?

Accepted Answer

Nautical for ships/aircraft, statute for cars/land. Flight distances are in nautical miles; speed in knots (nm/hour).

Question 3

Is this conversion factor exact?

Accepted Answer

Metric-to-metric conversions are exact (1 km = 1000 m). Imperial-to-metric factors like 1 inch = 2.54 cm are exact by international agreement.

Question 4

Why do some countries use different units?

Accepted Answer

Historical reasons - the metric system spread from France after 1795. The US, UK, and a few others retained older systems. Science uses metric worldwide.

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