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] /67Disp-Num
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    [1]  2022/09/14 22:06   50 years old level / A retired person / Very /
    Purpose of use
    Calculate distance between Cancun and Martinique
    [2]  2022/08/31 14:46   20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    checking to see how far apart my girlfriend and i will live next year
    [3]  2022/08/19 16:45   Under 20 years old / A retired person / Very /
    Purpose of use
    Calibrating my ICBM launcher
    [4]  2022/08/05 01:39   50 years old level / An engineer / Very /
    Purpose of use
    Fun! Thank you for putting this together.
    [5]  2022/07/18 01:28   50 years old level / An office worker / A public employee / Very /
    Purpose of use
    To find out the farthest I ever been from home.
    [6]  2022/06/25 04:53   Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    I use it to check the accuracy of a program I created to measure distance from country capitals
    [7]  2022/04/08 20:27   20 years old level / An engineer / Very /
    Purpose of use
    checking distance in postgis bounding box
    [8]  2022/02/07 09:13   50 years old level / An office worker / A public employee / Useful /
    Purpose of use
    Calculating relationship of AB across surface of a sphere vs through sphere
    Comment/Request
    DDMMSS coordinate system would be helpful for geographic values
    [9]  2022/01/20 13:16   60 years old level or over / An engineer / Useful /
    Purpose of use
    To confirm barometer shockwave was from the Tonga Volcano blast on 1/15/2022 (it was).
    Comment/Request
    Like to be able to change to degrees, minutes, seconds for location inputs. This makes it compatible with Google Earth usage.
    [10]  2022/01/20 00:58   30 years old level / An engineer / Very /
    Purpose of use
    figure out how far from home

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