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] /150Disp-Num
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    [1]  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?
    [2]  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
    [3]  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.
    [4]  2019/12/10 07:14   Male / 60 years old level or over / An office worker / A public employee / Useful /
    Purpose of use
    General interest.
    [5]  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)
    [6]  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
    [7]  2019/09/15 02:36   Male / 20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    For knowledge
    [8]  2019/09/06 10:03   Male / 30 years old level / Self-employed people / Useful /
    Purpose of use
    Comparing results of calculations for relative time dilation as experienced on the ISS over various time periods. If anyone is wondering the ISS orbits ~ 7.6604774 km/s, and there are ~ 2592000 seconds in 30 days. According to all this Scott Kelly experienced a time dilation of ~0.01 seconds over the course of his 1 year stay on the ISS compared to us earthbound humans.
    Comment/Request
    Cheers!
    [9]  2019/08/17 00:22   Male / 40 years old level / An engineer / Very /
    Purpose of use
    I like physics
    Comment/Request
    My boss asked me to do the work of 5 people. I was just wondered how close to the speed of light I would have to get to make that happen.
    ~ 97.979449503029%
    [10]  2019/07/07 06:08   Female / 30 years old level / A teacher / A researcher / Useful /
    Purpose of use
    I'm a mathematician writing a fiction novel that motivates certain mathematical concepts. I took a course in special relativity in college, but forgot the formula for calculating the time differential experienced by the traveler relative to the observer. Thanks for posting this calculator!

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