Universal- Planck constant
- Reduced Planck constant (Dirac constant)
- Speed of light
- Vacuum Permittivity
- Vacuum Permeability
- Impedance of free space
- Gravitational constant
- Planck length
- Planck time
Electromagnetic- Nuclear magneton
- Bohr magneton
- Electric charge of Electron
- Magnetic flux quantum
- Conductance quantum
- Josephson constant
- von Klitzing constant
Atomic & Nuclear- Mass of Proton
- Mass of Neutron
- Mass of Electron
- Mass of Muon
- Bohr radius
- Fine-Structure constant
- Classical Electron radius
- Compton wavelength
- Proton's Gyromagnetic ratio
- Compton wavelength of Proton
- Compton wavelength of Neutron
- Rydberg constant
- Magnetic moment of Proton
- Magnetic moment of Electron
- Magnetic moment of Neutron
- Magnetic moment of Muon
- Mass of Tau
Physico-Chem- Atomic mass unit
- Faraday constant
- Avogadro constant
- Boltzmann constant
- Molar volume of ideal gas at STP
- Gas constant
- First radiation constant
- Second radiation constant
- Stefan–Boltzmann constant
Adopted Values- Standard gravity
- Standard atmosphere
- conventional value of von Klitzing constant (Quantum Hall effect)
- conventional value of Josephson constant (Magnetic flux quantum)
Other- Kelvin scale at 0 degree Celsius