Constant	Symbol	Value	Units
Speed of light in vacuum	c0	299792458	m/s
Magnetic constant	e0	12.566370614E-7	N/A^2
Electric constant	m0	8.854187817E-12	F/m
Characteristic Impedance of Vacuum		376.730313461	Ohm
Newtonian constant of Gravitation		6.6742E-11	m^3/kg s^2
Planck constant	h	6.6260693E-34	J s
Planck constant in eV s	h	4.13566743E-15	eV s
Planck constant over 2 π	h/2π	1.05457168E-34	J s
Planck constant over 2 π in eV s	h/2π	6.58211915E-16	eV s
Elementary charge	e	1.60217653E-19	C
Fine-Structure constant		7.297352568E-3	-
Inverse Fine-Structure constant		137.03599911	-
Bohr radius		0.5291772108E-10	m
Electron Mass		9.1093826E-31	kg
Electron Mass in u		5.4857990945E-4	u
Electron Mass Energy equivalent		8.1871047E-14	J
Electron Mass Energy equivalent in MeV		0.510998918	MeV
Compton Wavelength		2.426310238E-12	m
Compton Wavelength over 2 pi		386.1592678E-15	m
Proton mass		1.67262171E-27	kg
Proton mass in u		1.00727646688	u
Proton mass energy equivalent		1.50327743E-10	J
Proton mass energy equivalent in MeV		938.272029	MeV
Neutron mass		1.67492728E-27	kg
Neutron mass in u		1.00866491560	u
Neutron mass energy equivalent		1.50534957E-10	J
Neutron mass energy equivalent in MeV		939.565360	MeV
Alpha Particle Mass		6.6446565E-27	kg
Alpha Particle Mass in u		4.001506179149	u
Alpha Particle Mass Energy equivalent		5.9719194E-10	J
Alpha Particle Mass Energy equivalent in MeV		3727.37917	MeV
Avogadro constant		6.0221415E+23	1/mol
Atomic Mass constant		1.66053886E-27	kg
Atomic Mass constant energy equivalent		1.49241790E-10	J
Atomic Mass constant energy equivalent in MeV		931.494043	MeV
Faraday constant		96485.3383	C / mol
Molar Gas constant		8.314472	J / mol K
Boltzmann constant		1.3806505E-23	J / K
Boltzmann constant in eV/K		8.617343E-5	eV / K
Boltzmann constant in Hz/K		2.0836644E+10	Hz / K
Boltzmann constant in inverse meters per Kelvin		69.50356	1 / m K
Molar Volume of Ideal Gas (273.15 K, 101.325 kPa)		22.413996E-3	m^3 / mol
Loschmidt constant (273.15 K, 101.325 kPa)		2.6867773E+25	1 / m^3
Wien Displacement Law constant		2.8977685E-3	m K
Electron Volt		1.602176 53E-19	J
Unified Atomic Mass unit		1.66053886E-27	kg