Question

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how to convert between degrees, minutes, seconds to Decimal coordinates

I have 39°07.356″N and 121°02.482″W and i need to convert it to Decimal Degrees.
any source?

Answer 1

You can use the following function to perform the task

public decimal DmsToDD(double d, double m = 0, double s = 0)
{
    return Convert.ToDecimal((d + (m/60) + (s/3600))*(d < 0 ? -1 : 1));
}

Of course, you’ll need to check to make sure the minute and second components are non-negative before you do the conversion.