Time Dilation Calculator
How much coordinate time passes for this proper time at relative speed? Enter the stated values to calculate this model.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Proper time (s) | Enter proper time in s; use the same basis as the other measurements. |
| Relative speed (m/s) | Enter relative speed in m/s; use the same basis as the other measurements. |
Understanding your result
Read Lorentz factor (1), Dilated time (s) in the units and model stated on this page. The formula gamma=1/sqrt(1-(speed/299792458)^2) · time=gamma*proper defines the relationship; measurement accuracy and model applicability are separate from numerical precision.
Common mistakes
- Mixing input units or changing the physical meaning of a variable without changing the model.
Check your calculation
- Use the worked example as a known reference case, then change one input at a time and check the direction and units of the response.
Calculation checks, sources and review limits
How much coordinate time passes for this proper time at relative speed?
How much coordinate time passes for this proper time at relative speed? Enter the stated values to calculate this model.
Common uses
- How much coordinate time passes for this proper time at relative speed
How it works
gamma=1/sqrt(1-(speed/299792458)^2); time=gamma*proper
Worked example
Enter Proper time: 3 s; Relative speed: 179875474.79999998 m/s. Results: Lorentz factor: 1.25 1; Dilated time: 3.75 s.