General Special Relativity Calculator
Select Calculation Type
Calculator Inputs
Time Dilation
Unit: e.g., seconds, years (result in same unit)
Speed of moving frame relative to stationary observer.
Length Contraction
Unit: e.g., meters, km (result in same unit)
Speed of object relative to stationary observer.
Relativistic Kinetic Energy
Unit: kilograms (kg)
Speed of the object.
Relativistic Velocity Addition
Positive or negative.
Positive or negative.