km to miles: Convert kilometers to miles

Answer
0.621371 mi = 1 km

1 km = 0.621371 mi. To convert kilometers to miles, multiply by 0.6213711922. To go back, multiply by 1.609344 (or divide by 0.6213711922). Kilometers measure road distances and races (a 10K is 10 km) outside the US and UK.

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Converted length
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How we calculated this

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    Formula

    mi = km × 0.6213711922 km = mi × 1.609344 10 km × 0.6213711922 = 6.21371 mi

    km to miles table

    kmmi
    1 km0.621371 mi
    2 km1.24274 mi
    3 km1.86411 mi
    4 km2.48548 mi
    5 km3.10686 mi
    6 km3.72823 mi
    7 km4.3496 mi
    8 km4.97097 mi
    9 km5.59234 mi
    10 km6.21371 mi
    12 km7.45645 mi
    15 km9.32057 mi
    20 km12.4274 mi
    25 km15.5343 mi
    30 km18.6411 mi
    40 km24.8548 mi
    50 km31.0686 mi
    60 km37.2823 mi
    75 km46.6028 mi
    100 km62.1371 mi
    150 km93.2057 mi
    200 km124.274 mi
    250 km155.343 mi
    500 km310.686 mi
    1,000 km621.371 mi

    Factors from NIST SP 811 and the BIPM SI Brochure; values rounded to 6 significant digits. Reverse: Miles to km.

    Frequently asked questions

    How many miles is 10 km?

    10 km = 6.21371 mi.

    How many km is 1 mi?

    1 mi = 1.60934 km.

    Open the full calculator: Length Converter: mm to Inches (with Fractions), Feet and Miles →