Relativistic Mass Calculator
Calculate relativistic mass and energy at high velocities
c = 2.998e8 m/s (speed of light)
Note: Velocity must be less than the speed of light
Formulas Used
γ = 1/√(1 - v²/c²) (Lorentz factor)
m = γm₀ (relativistic mass)
KE = (γ - 1)m₀c² (kinetic energy)
E = γm₀c² (total energy)
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: University Physics
by Young & Freedman
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.