Relativistic Momentum Calculator
Calculate momentum for particles moving at relativistic speeds
Momentum Results
Relativistic Momentum p = γm₀v
0.4577 MeV/c
2.4455e-22 kg m/s
Classical Momentum m₀v
1.8218e-22 kg m/s
Relativistic/Classical Ratio
1.342358×
Velocity & Lorentz Factor
Velocity
2.0000e+8 m/s
β = v/c
0.667111408
Lorentz Factor γ
1.342358
Energy
Total Energy E
0.6860 MeV
Rest Energy m₀c²
0.5111 MeV
Kinetic Energy
0.1750 MeV
Quantum Properties
de Broglie Wavelength λ = h/p
2.7095e-12 m
Invariant Mass (from E,p)
9.1090e-31 kg
About Relativistic Momentum
Relativistic momentum p = γm₀v increases without bound as velocity approaches c, unlike classical momentum. The energy-momentum relation E² = (pc)² + (m₀c²)² is Lorentz invariant. For massless particles (photons), E = pc. The de Broglie wavelength λ = h/p relates momentum to quantum wave properties.