Enter the total time interval and the velocity of the observer to calculate the relative time seen by that observer. This time dilation calculator can also be considered a relative time calculator.

## Time Dilation Formula

The following equation can be used to calculate the relative time seen by an observer traveling at fast speeds.

RT = t * √(1 – v²/c²)

- Where RT is the relative time (seconds)
- t is the actually time (seconds)
- v is the velocity of the observer
- c is the speed of light. (299792458 m/s)

As with most things involving relativity, the speed of light is present in this equation. For any time to be noticeably different the observer must be traveling at extremely fast speeds. If you play around with the values in the calculator you can see this effect.

Digging a little deeper into this formula, you may notice that this takes a square root of a value. What if this value is less than 0 or negative? Well, it cant be. That’s because the denominator for the equation is the speed of light, and nothing can travel faster than the speed of light. As the observer velocity approaches the speed of light, the relative time will approach 0.

## Related Terms

time dilation calculator |

time dilation formula |

how to calculate time dilation |

time dilation |

time dilation equation |

gravitational time dilation |

time dilation explained |

time dilation example |

time dilation meaning |

time dilation definition |

time dilation for dummies |

special relativity time dilation |

time dilation and length contraction |

gravity time dilation |

time dilation theory |

gravitational time dilation calculator |

relativistic time dilation |

define time dilation |

space time dilation |

einstein time dilation |

gravitational time dilation explained |

time dilution |

time dilation effect |

time dilation due to gravity |

general relativity time dilation |

velocity time dilation |

speed of light time dilation |

space dilation |

time dilation in physics |

time dilation length contraction |

interstellar time dilation explained |

theory of relativity time dilation |

time dilation explained simply |

time dilation equation derivation |

time dilation formula derivation |

gravitational time dilation example |

lorentz time dilation |

time dilation factor |

time dilation equation explained |

time dilation physics |

time dilation ppt |

formula of time dilation |

equation of time dilation |

time dilation explanation |

relative velocity time dilation |

time dilation calculator gravity |

special theory of relativity time dilation |

special relativity time dilation equation |

gravitational dilation |

quantum time dilation |

time dilation formula explained |

lorentz transformation time dilation |

understanding time dilation |

time dilation in tamil |

speed of light time dilation calculator |

time dilation at the speed of light |

time dilation equation calculator |

time dilation space |

time dilation explained for dummies |

relativistic time dilation calculator |

time dilation in special theory of relativity |

relativity and time dilation |

dilation physics |

relativity time dilation calculator |

lorentz factor time dilation |

light dilation |

speed of light and time dilation |

gravitational time |

einstein time dilation equation |

explanation of time dilation |

time dilation simple explanation |

time dilation in relativity |

relative time dilation |

concept of time dilation |

time dilation for kids |

time dilation clock |

time dilation in general relativity |

time dilation by gravity |

gamma time dilation |

time dilation gravity calculator |

albert einstein time dilation |

time dilation easy explanation |

show that time dilation is a real effect |

definition of time dilation in physics |

einstein time dilation formula |

best explanation of time dilation |

time dilation einstein relativity |

application of time dilation |

time dilation in special relativity |

time dilation equation proof |

neil degrasse tyson time dilation |

special relativity and time dilation |

time dilation near the sun |

simple explanation of time dilation |