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] /61Disp-Num
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    [1]  2022/04/08 20:27   20 years old level / An engineer / Very /
    Purpose of use
    checking distance in postgis bounding box
    [2]  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
    [3]  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.
    [4]  2022/01/20 00:58   30 years old level / An engineer / Very /
    Purpose of use
    figure out how far from home
    [5]  2022/01/10 15:42   20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    Wanted to see how far away I was from someone
    [6]  2021/12/29 07:37   50 years old level / An engineer / Useful /
    Purpose of use
    Astronomical observations in surveying practice.
    [7]  2021/12/09 21:45   Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Mathematical investigation
    Comment/Request
    The inclusion of the mathematics behind the calculator was very helpful
    [8]  2021/10/01 22:39   Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Determine length of time for longwave regime (h/\lambda<<1)Tsunami to travel from Valparaıso, Chile to Hawaii. This modelling process has application in climate modelling and emergency response time which has vast implications for national security across the pacific. The authors would like to acknowledge this useful online tool, as well as funding secured from national grant no. 2.64 under the 2017 Climate SN Committee.
    [9]  2021/09/15 23:08   40 years old level / An engineer / Useful /
    Purpose of use
    Measure how far away do I live from the place I was born
    [10]  2021/08/30 21:47   Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Finding distance to place of birth (17,032 km!)

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