# Find distance between two points on Earth

by Mk
Tags: distance, earth, points
 P: 2,056 How could you find the distance between two points, such as N12° 34.567 W12° 34.567 and N12° 34.568 W12° 34.567?
 Emeritus Sci Advisor PF Gold P: 10,427 Use a great circle. http://gc.kls2.com/ - Warren
 Sci Advisor HW Helper P: 11,915 Wow, how interesting, i didn't see this thread when i posted mine. Anyway, i guess my treatment of the subject is quite accessible. Daniel.
 P: 4 Find distance between two points on Earth http://www.chemical-ecology.net/java/lat-long.htm Even a better place..
 P: 4 0.0011506641413132668 miles or 6.076 feet
P: 4
 Quote by Mk How could you find the distance between two points, such as N12° 34.567 W12° 34.567 and N12° 34.568 W12° 34.567?
Be careful though, becasue you have a mixed lat long.. you have to convert the decimal of minutes to minutes and seconds. 34.567 minutes = 34 Minutes 34.02 seconds(.567 * 60)..
 P: 2,056 Guys, I wanted to know how I could get the answer, not for you to tell me or give me an app to do do it for me.
 Emeritus Sci Advisor PF Gold P: 10,427 Use a great circle. The equation is given here: http://mathworld.wolfram.com/GreatCircle.html - Warren
 P: 6 "Unfortunately, the flattening of the Earth cannot be taken into account in this simple derivation, since the problem is considerably more complicated for a spheroid or ellipsoid (each of which has a radius which is a function of latitude). This leads to extremely complicated expressions for oblate spheroid geodesics and geodesics on other ellipsoids." So you won't get the most accurate solutions; but that's no problem if dealing with relatively short distances.

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