Miles to Km Converter
Convert miles to kilometers, or kilometers to miles, instantly.
Kilometers
42.1647
Distance Conversion Formulas
Kilometers = miles × 1.60934. Miles = kilometers ÷ 1.60934.
Worked example
Convert a 26.2-mile marathon to kilometers.
26.2 × 1.60934 ≈ 42.16
26.2 miles ≈ 42.16 km
Frequently Asked Questions
How many kilometers are in a mile?
1 mile = 1.60934 kilometers.
How many miles are in a kilometer?
1 kilometer = 0.621371 miles.
Why is a mile equal to 1.60934 km specifically?
A mile is defined internationally as exactly 1,609.344 meters. Dividing by 1,000 to convert to kilometers gives the 1.60934 conversion factor.
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