| Constant | Symbol | Value |
| Speed of light in a vacuum | c | 3.00 x 108 m/s |
| Elementary Charge | e | 1.60 x 10-19 C |
| Gravitational constant | G | 6.67 x 10-11 m3kg/s2 |
| Average acceleration due to gravity at Earth's surface | g | 9.8 m/s2 |
| Universal gas constant | R | 8.31 JK/mol |
| Avagadro constant | NA | 6.022 x 1023 mol-1 |
| Boltzman constant | k | 1.38 x 10-23 J/K |
| Stefan-Boltzman constant | ? | 5.67 x 10-8 WK4/m2 |
| Molar volume of a gas at STP | Vm | 2.27 x 10-23 m3/mol |
| Permittivity constant | e0 | 8.85 x 10-12 F/m |
| Permeability constant | µ0 | 1.26 x 10-6 H/m |
| Planck constant | h | 6.63 x 10-34 Js |
| Electron mass | me | 9.11 x 10-31 kg |
| 5.49 x 10-4 amu |
| Proton mass | mp | 1.67 x 10-27 kg |
| 1.0073 amu |
| Electron charge-to-mass ratio | e/me | 1.76 x 1011 C/kg |
| Neutron mass | mn | 1.68 x 10-27 kg |
| 1.0087 amu |
| Hydrogen atom mass | m1H | 1.0078 amu |
| Deuterium atom mass | m2H | 2.0141 amu |
| Tritium atom mass | m3H | 3.016 amu |
| Helium atom mass | m4He | 4.0026 amu |
| Muon mass | mµ | 1.88 x 10-28 kg |
| Electron magnetic moment | µe | 9.28 x 10-24 J/T |
| Bohr magneton | µp | 9.27 x 10-24 J/T |
| Nuclear magneton | µN | 5.05 x 10-27 J/T |
| Bohr radius | rB | 5.29 x 10-11 m |
| Rydberg constant | R | 1.10 x 107 m-1 |
| Electron Compton wavelength |  | 2.43 x 10-12 m |
| Faraday constant | F | 965000 e-(C/mol) |
| Notes |
| 1 amu = 1.66053873 x 10-27 kg |