Special Relativity Time Dilation & Lorentz Factor Calculator

Calculate relativistic Lorentz factor (γ), time dilation, length contraction, and relativistic mass at fractional speeds of light (c).

Velocity as fraction of speed of light (v/c): 0.80 c Proper Time Elapsed by Stationary Observer (seconds):

Calculate relativistic Lorentz factor (γ), time dilation, length contraction, and relativistic mass at fractional speeds of light (c).

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Special Relativity Time Dilation & Lorentz Factor Calculator Online - Fr...