Distance between two places on the earth Calculator

Calculates the distance and azimuth between two places from latitudes and longitudes.

Calculation assumes that the Earth is a sphere with a radius of 6378km.
Input negative degree for west longtitude and south latitude.
Distance between two places on the earth
A: Longitude
    1. Latitude
B: Longitude
    1. Latitude
    1. [ Earth's radius r
    2. km ]

Compass from A to B

place A(x1, y1)、place B(x2, y2)
    Distance between two places on the earth
    [1-10] /50Disp-Num
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    [1]  2021/06/07 23:25   60 years old level or over / A retired person / Very /
    Purpose of use
    Determine the distance between two points using the same numbers for coordinates in both the Indian 1975 datum and the WGS84 datum. The difference would be the error in using the 1975 datum coordinates on a WGS84 map; or the correction necessary to make the 1975 coordinates "good" on a WGS84 map.
    [2]  2021/04/23 14:01   30 years old level / A teacher / A researcher / Useful /
    Purpose of use
    How far away do you live from the place you were born?
    [3]  2021/04/06 03:45   30 years old level / An engineer / Very /
    Purpose of use
    Finding the answer to the question: "What is the farthest place you have traveled to?"
    [4]  2021/04/01 09:38   20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    Godzilla vs Kong
    [5]  2021/03/15 01:54   Under 20 years old / Elementary school/ Junior high-school student / Useful /
    Purpose of use
    Finding distance between cities
    [6]  2021/03/01 08:41   60 years old level or over / Others / Useful /
    Purpose of use
    Calculate error between published coordinates and GPS coordinates.
    [7]  2021/01/15 12:51   Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    Fin.ding distance for two points to compare to an airliners maximum range, and see if there was enough fuel left over to turn around and return to the original airport just before landing
    [8]  2020/12/06 06:37   20 years old level / Others / Very /
    Purpose of use
    calculate distance between two points in my homebrew world with a custom radius for Dungeons and Dragons overland travel
    [9]  2020/10/09 10:40   30 years old level / A teacher / A researcher / Very /
    Purpose of use
    To see how far my boyfriend is away from me. 9,250 miles :(
    [10]  2020/09/10 18:26   20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    Baseline distance for lunar parallax calculation

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