Unit Converters

Kilometers to Miles Converter

Convert between kilometers and miles using the exact international factor. It includes common race distances and a Fibonacci mental-math trick.

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Converted distance
6.214 mi

10 kilometres → miles

Conversion factor
×0.621371
1 km equals
0.6214 mi
Conversion factors are exact; rounding may affect the final digit.
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How it's calculated

mi = km × 0.621371

km = kilometres, mi = miles. 1 km = 0.621371 mi; 1 mi = 1.609344 km.

Common values

KilometersMiles
10.621
53.107
106.214
21.097513.109
42.19526.219

Common questions

How many miles is a 5K?

About 3.11 miles. A 10K is roughly 6.21 miles.

What is the Fibonacci trick for km to miles?

Consecutive Fibonacci numbers approximate the conversion: 5 km is about 3 miles, 8 km about 5, 13 km about 8, and so on.