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] /142Disp-Num
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    [1]  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%
    [2]  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!
    [3]  2019/07/06 04:15   Male / 60 years old level or over / Others / A little /
    Purpose of use
    Curious the time differential between person on Earth and person orbiting Earth at 33,000 mph. Result ~13.75 sec/year.
    Comment/Request
    Unfortunately isn't accurate. The further from gravity source the faster the time. The closer to
    strong/deep gravity well the slower the time. Alternatively, the faster the speed the slower the time. This calculation doesn't include gravimetric time dilation.
    [4]  2019/07/04 22:25   Male / 20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    There is a meme about how to practice 40h/day. Turns out the answer is moving at 239834 km/s.
    [5]  2019/06/26 18:54   Male / Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Research
    [6]  2019/05/30 04:04   Male / Under 20 years old / Elementary school/ Junior high-school student / Very /
    Purpose of use
    Helping to create a science fiction novel.
    [7]  2019/04/17 06:45   Male / 40 years old level / An engineer / Very /
    Purpose of use
    leisure
    [8]  2019/03/10 06:33   Male / 50 years old level / Others / Very /
    Purpose of use
    Working out how fast the ref in the PSG Man U game was travelling such that he played 9 minutes of the 3 added on
    [9]  2019/03/08 13:53   Male / 30 years old level / Self-employed people / Very /
    Purpose of use
    Purpose: LOLs

    My friend said he would be here in 5 minutes but it took him over 18 minutes so I told him he must be going very near the speed of light relative to me for any of that to make sense.
    [10]  2019/03/06 11:10   Male / 20 years old level / High-school/ University/ Grad student / A little /
    Purpose of use
    Studies of quantum physics.

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