| Name | Symbol | Value |
| Boltzmann | k | 8.617 343 x 10-5 eV (molecule·K)
1.380 650 5 x 10-23 J/K |
| Charge Density† | | 1.081 202 317 x 1012 C/m3 |
| Conductance Quantum | G0 | 7.748 091 733 x 10-5 S |
| Current† | | 6.623 617 82 x 10-3 Ω |
| Electron Charge/Mass Ratio | e/me | 1.758 820 12 x 1011 C/kg |
| Electric Dipole Moment† | | 8.478 353 09 x 10-30 C·m |
| Electric Field† | | 5.142 206 42 x 1011 V/m |
| Electric Field Gradient† | | 9.717 361 82 x 1021 V/m2 |
| Electric Potential† | | 27.211 384 5 V |
| Electric Quadrupole Moment† | | 4.486 551 24 x 10-40 C·m2 |
| Electron Volt | eV | 1.602 176 53 x 10-19 J |
| Elementary Charge | e | 1.602 176 53 x 10-19 C |
| Impedance of Free Space | Z0 | 376.730 313 461 (120·π) Ω |
| Josephson | KJ | 2.350 517 42 x 105 T |
| Magnetic Flux Quantum | F0 | 2.067 833 72 x 10-15 Wb |
| Magnetic Flux Density† | | 4.486 551 24 x 10-40 C·m2 |
| Magnetizability† | | 7.891 036 60 x 10-29 J/T2 |
| Magnetic Flux Dipole Moment† | | 1.854 801 90 x 10-23 J/T |
| Permeability of Free Space | m0 | 1.256 637 061 4 x 10-6 H/m (N/A2) |
| Permittivity of Free Space | e0 | 8.854 187 817 x 10-12 F/m |
| Planck * | h | 4.135 667 43 x 10-15 eV·s
6.626 069 3 x 10-34 J·s |
| von Klitzing | RK | 25 812.807 449 Ω |
= h/2p