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  • Uk MPH?

    is there a difference between the UK MPH and the US MPH? I assume there would be given that there is (correct me if I am wrong) a difference in the UK mile versus the US mile.

    -J

  • #2
    Re: Uk MPH?

    Originally posted by Unregistered
    is there a difference between the UK MPH and the US MPH? I assume there would be given that there is (correct me if I am wrong) a difference in the UK mile versus the US mile.

    -J
    The International mile is the same in both countries, 1.609 344 km, exactly.

    There is a Survey mile used in the United States only for land measurment (surveying) and since the development of the NAD83 datum, only in some states (for geodetic surveys based on NAD27 datum, Survey foot was universal). The difference is minor 1.609 347 km, and I guarentee the speedometer in cars, which can be 3% or worse, can't tell the difference (0.0002%).

    (There is about a 20% difference in the gallons so beware of mile per gallon figures.)

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