# 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 sec Relative velocity v km/s≦c 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit Elapsed time at observer T sec Velocity ratio to light v/c %
 $\normal Time\ dilation\\\vspace{5}\hspace{20} T={\large\frac{T_0}{\sqrt{1-{\large\frac{v^2}{c^2}}}}},\hspace{20}c=299792.458km/s$

Special relativity (time dilation)
 [1-10] /136 Disp-Num5103050100200
[1]  2019/04/17 06:45   Male / 40 years old level / An engineer / Very /
Purpose of use
leisure
[2]  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
[3]  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.
[4]  2019/03/06 11:10   Male / 20 years old level / High-school/ University/ Grad student / A little /
Purpose of use
Studies of quantum physics.
[5]  2019/02/09 11:08   Male / 20 years old level / High-school/ University/ Grad student / Very /
Purpose of use
how space and time work in daily life
[6]  2019/01/03 00:12   Male / 30 years old level / A teacher / A researcher / Very /
Purpose of use
Calculate how much younger my pilot friend is than he would've been had he chosen a different career. Between 1 and 2 microseconds.
[7]  2018/09/09 23:46   Male / 60 years old level or over / High-school/ University/ Grad student / Useful /
Purpose of use
Nice calculator
Comment/Request
It would be nice to be able to select elapsed time at a body (T0) and Elapsed time at observer (t) units, such as seconds, hour, days, years.
[8]  2018/08/23 00:21   - / - / - / - /
Purpose of use
To find out how fast I need to travel to see the sun turn into a planetary nebula.
Comment/Request
0.99999999999999996c
[9]  2018/08/13 23:22   Male / 40 years old level / Others / Very /
Purpose of use
2 Peter 3:8 seemed like time dilation of "a day is like a thousand years, and a thousand years are like a day". I converted 1 years into seconds and entered it into the calculator. From subtracting the given speed of light to the V calculated was 1.15m/s which is 2.5MPH slightly less than walking pace of a man.
[10]  2018/08/10 11:56   Male / 30 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Ascertain if the Parker space probe is anywhere near relativistic velocities... A tenth of a microsecond is actually a very long... then again I work with ultrafast lasers so everything really seems to be slow to me.
Comment/Request
Better way of displaying the elapsed time at observer. It''s hard to count zeros.

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