MPH to km/h: Convert miles per hour to kilometers per hour

Answer
1.60934 km/h = 1 mph

1 mph = 1.60934 km/h. To convert miles per hour to kilometers per hour, multiply by 1.609344. To go back, multiply by 0.6213711922 (or divide by 1.609344). Miles per hour are used for speed limits and speedometers in the US and UK.

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Mach assumes the speed of sound at sea level, 15 °C (340.29 m/s).
Converted speed
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How we calculated this

    Printed from sizebench.com/mph-to-kmh-speed-converter

    For estimating and educational purposes only. Results are approximate and are not a substitute for a licensed professional, the manufacturer's instructions or your local code. Disclaimer

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    Formula

    km/h = mph × 1.609344 mph = km/h × 0.6213711922 60 mph × 1.609344 = 96.5606 km/h

    MPH to km/h table

    mphkm/h
    5 mph8.04672 km/h
    10 mph16.0934 km/h
    15 mph24.1402 km/h
    20 mph32.1869 km/h
    25 mph40.2336 km/h
    30 mph48.2803 km/h
    35 mph56.327 km/h
    40 mph64.3738 km/h
    45 mph72.4205 km/h
    50 mph80.4672 km/h
    55 mph88.5139 km/h
    60 mph96.5606 km/h
    65 mph104.607 km/h
    70 mph112.654 km/h
    75 mph120.701 km/h
    80 mph128.748 km/h
    85 mph136.794 km/h
    90 mph144.841 km/h
    100 mph160.934 km/h
    120 mph193.121 km/h
    150 mph241.402 km/h
    200 mph321.869 km/h

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

    Frequently asked questions

    How many km/h is 60 mph?

    60 mph = 96.5606 km/h.

    How many mph is 1 km/h?

    1 km/h = 0.621371 mph.

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