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    MPH ↔ KM/H

    Convert between miles and kilometers per hour

    MPH ↔ KM/H

    Quick Facts

    • •60 mph = 96.6 km/h
    • •100 km/h = 62.1 mph
    • •Speed of sound ≈ 767 mph (1,235 km/h)

    MPH and KM/H

    Miles per hour (mph) is used in the US, UK, and a few other countries. Kilometers per hour (km/h) is the standard in most countries. Common speed limits: US highways 65–75 mph (105–121 km/h), European motorways 120–130 km/h (75–81 mph).

    How to convert Miles per hour to Kilometers per hour

    To convert miles per hour to kilometers per hour, multiply the number of miles per hour by the conversion factor. The exact factor is 1.60934.

    Formula

    Kilometers per hour = Miles per hour × 1.60934

    Worked example

    Convert 10 mph to km/h: 10 mph = 16.0934 km/h.

    Miles per hour to Kilometers per hour reference table

    Use this quick lookup for common miles per hour to kilometers per hour values.

    Miles per hour (mph)Kilometers per hour (km/h)
    1 mph1.6093 km/h
    2 mph3.2187 km/h
    5 mph8.0467 km/h
    10 mph16.0934 km/h
    20 mph32.1868 km/h
    25 mph40.2335 km/h
    50 mph80.467 km/h
    75 mph120.7005 km/h
    100 mph160.934 km/h
    250 mph402.335 km/h

    Frequently asked questions

    What is the formula to convert Miles per hour to Kilometers per hour?

    Multiply the number of miles per hour by 1.60934 to get kilometers per hour. For example, 10 mph equals 16.0934 km/h.

    How many kilometers per hour are in 1 miles per hour?

    1 mph equals 1.6093 km/h.

    How do I convert kilometers per hour back to miles per hour?

    Reverse the formula: Miles per hour = Kilometers per hour ÷ 1.60934. For example, 100 km/h equals 62.1373 mph.

    Is this Miles per hour to Kilometers per hour converter accurate?

    Yes. Conversions use the internationally accepted ratio for miles per hour and kilometers per hour and are calculated to 4 decimal places in your browser.

    What is 10 mph in km/h?

    10 mph equals 16.0934 km/h.

    More Speed & Pace Tools

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    Convert between knots and miles per hour

    Min/Mile ↔ Min/KM

    Convert running pace between miles and km

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    MPH to KM/H: Speed Conversion for Drivers and Travelers

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    This calculator is for educational and reference purposes only. Always verify critical calculations independently.