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I want to convert a set of 5 Lat Long (Directly taken from Google Maps) into Sq Meter area.

As 5 points are there I have found the formula on Converting Longitude and Latitude Coordinates to Square Miles?

area = rad(x2 - x1) * (2 + sin(rad(y1)) + sin(rad(y2))) + rad(x3 - x2) * (2 + sin(rad(y2)) +
+ sin(rad(y3))) + rad(x4 - x3) * (2 + sin(rad(y3)) + sin(rad(y4))) +
+ rad(x5 - x4) * (2 + sin(rad(y4)) + sin(rad(y5)))

area = abs(area * 6378137.0 * 6378137.0 / 2.0)

but this formula is not giving me the correct area.

I am putting the latitude in x & Longitude in y also as i vary the digits after decimal places it changes the answer (obviously) (ex. 20.011619, 73.762870 have 6 digits after decimal)

So what is the correct method to use this formula with lat, long? Do I want to convert lat-long into another measure to get the area correctly?

  • Usually, x = longitude, and y=latitude. No comment on the formula you use or the answers/comments in the URL link. – Ralph Tee Mar 26 at 0:56

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