1 km is Equal to How Many Miles?

Answer: 1 kilometre (km) is equal to approximately 0.621 miles. The precise conversion factor is: 1 km = 0.621371 miles

Kilometres and miles are both units used to measure distance. While the kilometre is a part of the metric system (widely used worldwide), the mile belongs to the imperial system, which is commonly used in the United States and a few other countries.

Conversion Formula

To convert kilometres to miles, use the formula: Miles = Kilometers × 0.621371

For example:

• 5 km = 5 × 0.621371 = 3.11 miles
• 10 km = 10 × 0.621371 = 6.21 miles

The metric system, which includes kilometres, was introduced for its simplicity and consistency, making calculations easier. The imperial system, including miles, has historical significance and is still in use in countries like the U.S. and the U.K.

Fun Fact About Distance Measurements

• The marathon race, which is 42.195 km, is roughly 26.2 miles long!
• A nautical mile is different from a regular mile—it equals 1.852 km and is used in aviation and maritime navigation.

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