Special relativity (time dilation) Calculator

Calculates the time dilation of a body moving for some time with some relative velocity with respect to the observer.

Elapsed time at a body T0
    1. sec
Relative velocity v
    1. km/s
    2. ≦c

Elapsed time at observer T
    1.  
    2. sec
Velocity ratio to light v/c
    1.  
    2. %
    Special relativity (time dilation)
    [1-10] /154Disp-Num
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    [1]  2020/05/28 03:36   Male / Under 20 years old / High-school/ University/ Grad student / A little /
    Purpose of use
    To find the time dilation between going at the speed of light for 8.6 years and being on Earth for [how many years (is what I'm trying to calculate.)]
    [2]  2020/05/20 10:01   Male / 30 years old level / An engineer / Very /
    Purpose of use
    Satisfying my curiosity.
    Comment/Request
    Thank you for making this! Different time input units would make it more user friendly. A reverse calculator from the perspective of the observer would also be useful.
    [3]  2020/05/01 23:45   Female / 50 years old level / Self-employed people / Useful /
    Purpose of use
    There is a line from a Chicago song "Does anybody really know what time it is?" It occurred to me that the Earth is moving at a pretty dizzying speed in orbit around our sun, our galaxy, and wherever the galaxy is going in a handbasket... So our sense of time must be off a bit. :)
    [4]  2020/03/06 06:28   Male / 60 years old level or over / A retired person / Useful /
    Purpose of use
    Reading a science fiction novel
    Comment/Request
    You should have a converter to put the seconds into days and the days into years.
    [5]  2020/02/09 12:09   Male / 20 years old level / Others / Useful /
    Purpose of use
    Mathematical curiosity
    Comment/Request
    If one person spent one year in one spaceand only one minute passed in another,
    How many days passed in one Second?
    [6]  2020/01/04 14:35   Male / Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    Curiosity from reading some sci-fi paperbacks
    Comment/Request
    pretty neat
    [7]  2019/12/30 03:25   Male / Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Curiosity
    Comment/Request
    I am 16 years old and my dad is 53 years old. Suppose he was in a rocket and orbiting around the Sun at the speed c-1 m/s ( only one m/s less then the speed of light). My question is : for how long would he need to travel if he was going at speed of c-1 m/s so that both of us would be same age when he comes back home to Earth.
    [8]  2019/12/10 07:14   Male / 60 years old level or over / An office worker / A public employee / Useful /
    Purpose of use
    General interest.
    [9]  2019/12/05 01:24   Male / 50 years old level / Others / Useful /
    Purpose of use
    curiosity, wanted to know the time dilation for Voyager (1.0000000016458)
    [10]  2019/11/23 01:03   Male / Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Got bored
    Comment/Request
    Please implement miles/second

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