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] /185Disp-Num
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    [1]  2022/03/31 02:36   20 years old level / An office worker / A public employee / A little /
    Purpose of use
    Listening to Project Hail Mary
    Comment/Request
    Ability to Change the units to Minutes/Days/Months/Years/ Miles Etc
    [2]  2021/12/24 05:03   30 years old level / An engineer / Useful /
    Purpose of use
    Determining how fast the creation of the universe would need to be for billions of years to be equivalent to 4 days from the observer
    Comment/Request
    allow input as a % of c
    [3]  2021/12/14 05:00   60 years old level or over / An engineer / Useful /
    Purpose of use
    Time to distant stars at 1G acc. to mid-point &1G dec. to destination.
    [4]  2021/11/24 18:27   40 years old level / An engineer / A little /
    Purpose of use
    Would love to see 'real world' speeds with highly fractionalised results. Eg the tiny relativistic effects of travelling at 100kmh for 2 hours
    [5]  2021/11/21 17:42   Under 20 years old / Elementary school/ Junior high-school student / Useful /
    Purpose of use
    Just making sure my own calculations of time dilation are correct. Doing this just for fun.
    [6]  2021/11/06 03:21   40 years old level / An engineer / Useful /
    Purpose of use
    hypothesis question
    Comment/Request
    This is an attempt to reconcile the theory of time dilation with the time it takes light to travel 1AU. Assuming that time is equal to distance at C, the observed time it takes light to travel 1AU is approximately 8 minutes or 480 seconds. However, using the time dilation equation, if I were traveling at 99.999847227644% C the distance of 1AU, I would observe the passage of approximately 274,602 seconds or 3.24 days on on Earth. How does physics reconcile this discrepancy?
    [7]  2021/08/07 03:16   40 years old level / An engineer / Useful /
    Purpose of use
    Wondered how fast a space ship would have to be going to make the trip to Proxima Centauri take only 15 minutes for the people on the ship.
    [8]  2021/07/12 00:44   30 years old level / An office worker / A public employee / Very /
    Purpose of use
    calculating when starships would arrive in relative time to each other for building an TTRPG setting.
    [9]  2021/06/19 01:13   30 years old level / Others / Useful /
    Purpose of use
    Calculating time dilation for spacecraft traveling to tau ceti star from earth. Reading Andy Weir's book Project Hail Mary.
    [10]  2021/06/04 17:34   Under 20 years old / High-school/ University/ Grad student / A little /
    Purpose of use
    essayabout time travel
    Comment/Request
    would like to be able to select time in years instead of seconds

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