Energy velocity calculator

Simple calculator to relate masses, energies and velocities. Given:

1. Mass and energy: calculates β and velocity
2. Velocity and/or β and mass: calculates energy
3. Velocity and/or β and mass: calculates mass

Mass: MeV/c^2 u

Energy MeV keV
GeV MeV/u

Beta: Velocity: cm/ns cm/ps