Here are some funamental constants, in SI units.

ε0   8.8854*10-12 farad metre-1 Permittivity of free space.

μ0   4π*10-7 henry metre-1       Permeability of free space.

c    2.998*10 m/s                  Velocity of light.

h    6.626*10-34 joule sec          Plank's constant.

e    1.602*10-19 coulomb          Charge of electron.

k    1..381*10-23 joule/K           Boltzmann's constant.

me  9.110*10-31 kgram              Mass of electron .