| name | Symbol | unit | Value | remarks |
| Reduced Planck constant |
| J∙s |
| exact |
| Official Gravitation constant |
| kg−1∙m3∙s−1 |
| contested |
| Optimized Gravitation constant | G | kg−1∙m3∙s−1 |
| [5] |
| Relativity local speed | c | m∙s−1 | 299792458 | exact |
| Boltzmann conversion constant |
| J∙K−1 |
| exact |
| Rydbergh reduced wavelength |
| m |
| (Monster Group order) |
| Fermi constant |
| J∙m3 |
| 500 ppb |
| Electron mass |
| kg |
| 0.3 ppb |
| Electron reduced wavelength |
| m |
| 0.3 ppb |
| Electron classical radius |
| m |
| 0.45 ppb |
| Hydrogen Bohr radius |
| m |
| 0.45 ppb |
| Planck length |
| m |
| ppb [5] |
| Critical density |
| kgm−3 |
| with , independent of c |
| Optimised CMB temperature |
| K | 2.7258204 | [5] 2.7255(6) |
| CMB wavelength |
| m |
| [5] |
| CMB red. wav. ; |
| m |
|
|
| CMB Wien wavelength |
| m |
| [5] |
| CMB photon length |
| m |
| [5] |
| CMB energy density |
| J∙m−3 |
| [5] |
| Radiation density energy |
| J∙m−3 |
| [5] |
| Critical Energy versus radiation ratio |
| - | 12045.685 |
|
| Square root of critical entropy |
| - | 12087.731 |
|
| Optimized CNB temperature |
| K | 1.9455976 | [3] |
| Neutrino (CNB) reduced wavelength |
| m |
|
|
| Non-Local (Kotov) length |
| m |
| [5] |
| Hubble length (Universe radius) | R | m |
| [5] |
| Cosmos holographic radius |
| m |
| [5] |
| Cosmos radius |
| m |
| [5] |
| Universe mass | M | kg |
| [5] |
| Baryonic Neutron Number |
| - |
| [5] |
| Eddington Large Number |
| - |
| [10] |
| Cosmos holographic reduced mass |
| kg |
| [5] Nambu mass |