Why do American scientist use Kilometers instead of miles?

Answer 1

Because scientists are educated people who understand that their results and reports may be published and read by people outside of America.

What seems strange is that some people still use Miles rather than Kilometres.

Answer 2

The Metric system is more widely used. The Imperial (American) system is only used in three countries, therefore it's just more practical to use metric. Metric also uses easier numbers. For example 100 cm = 1 m or 1000 m = 1k m. Whereas the Imperial system uses difficult numbers. For example 5280 ft = 1 mi. or 1760 yds. = 1 mi.

Answer 3

We use kilometers instead of centimeters for the same reason that we use miles instead of inches between cities.
1.0 km = 100,000 cm
1.0 mi = 63360 in
It is far easier to use kilometers than to use centimeters for distances between cities.

Answer 4

They needed a worldwide standard of weights amd measures and decided the best match to all fields and constants was metric.

Answer 5

The more accurate, more important question is: Why American DON'T use the metric system ?

Answer 6

America doesn't use the metric system in general. We use the English system with Inches, feet, etc.

Answer 7

Kilometer is exactly 1000 meters, which is the international standard unit for length.

Answer 8

We use kilometers because there are 100,000 centimeters in one kilometer. You use the largest measurement that fits.

Answer 9

Because a centimetre, which is approx the width of the little finger nail is too small a unit.