| Length | $\mathrm{m}$ | $a_\mathrm{B}$ | Å | |
| Mass | $\mathrm{kg}$ | $m_\mathrm{e}$ | $\mathrm{Da}$ | |
| Time | $\mathrm{s}$ | $\hbar / E_\mathrm{h}$ | ||
| Energy | $\mathrm{J}$ | $E_\mathrm{h}$ | $\mathrm{eV}$ | $\mathrm{Ry}$ |
| Temperature | $\mathrm{K}$ | $E_\mathrm{h}$ | ||
| Wavenumber | $\mathrm{kayser}$ | $\mathrm{meV}$ |