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  • Meters to Minutes

    I have been searching for a way to calculate meters to minutes (as in degrees)

    I am trying to calculate 687 Meters N from N 45 26.293 and 3149 meters E from 122 43.339

    Could someone please tell me if the answer I have is correct? There seems to be an error.

    My current result is 45 26.650 and 122 41.699 but the coordinates put me in someone's back yard and should be a park or a public place.

    This kind of math is greek to me but we are doing the best we can with it. The information I found that gave me the above answer is that there are 32 meters per minute. I am not sure how accurate that is.

    Thanks for anyone that likes this creative math and takes a moment to check it out!

  • #2
    Re: Meters to Minutes

    Originally posted by Unregistered
    I have been searching for a way to calculate meters to minutes (as in degrees)

    I am trying to calculate 687 Meters N from N 45 26.293 and 3149 meters E from 122 43.339

    Could someone please tell me if the answer I have is correct? There seems to be an error.

    My current result is 45 26.650 and 122 41.699 but the coordinates put me in someone's back yard and should be a park or a public place.

    This kind of math is greek to me but we are doing the best we can with it. The information I found that gave me the above answer is that there are 32 meters per minute. I am not sure how accurate that is.

    Thanks for anyone that likes this creative math and takes a moment to check it out!
    Well, the 32 m per minute of arc figure is completely wrong; that has led you astray.

    Table 6 of The American Practical Navigator gives the length of a degree of longitude and latitude in several units. (they are both functions of latitude as the earth is an ellipsoid, and the meredians converge.) The length of a degree of arc (60 minutes) is
    Latitude 45: 111131 m
    46: 111151 m
    (these are measured from a half degree on either side and you can interpolate.

    Longitude (@45 latitude): 78849 m
    (@46 latitude): 77466 m

    I would either interpolate to your actual latitude or at least to 4530' (the midpoint of the two figures)

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