| alpha particle mass |
6.64465675e-27 kg |
| alpha particle mass energy equivalent |
5.97191967e-10 J |
| alpha particle mass energy equivalent in MeV |
3727.37924 MeV |
| alpha particle mass in u |
4.00150617913 u |
| alpha particle molar mass |
0.00400150617912 kg mol^-1 |
| alpha particle-electron mass ratio |
7294.2995361 |
| alpha particle-proton mass ratio |
3.97259968933 |
| Angstrom star |
1.00001495e-10 m |
| atomic mass constant |
1.660538921e-27 kg |
| atomic mass constant energy equivalent |
1.492417954e-10 J |
| atomic mass constant energy equivalent in MeV |
931.494061 MeV |
| atomic mass unit-electron volt relationship |
931494061.0 eV |
| atomic mass unit-hartree relationship |
34231776.845 E_h |
| atomic mass unit-hertz relationship |
2.2523427168e+23 Hz |
| atomic mass unit-inverse meter relationship |
7.5130066042e+14 m^-1 |
| atomic mass unit-joule relationship |
1.492417954e-10 J |
| atomic mass unit-kelvin relationship |
1.08095408e+13 K |
| atomic mass unit-kilogram relationship |
1.660538921e-27 kg |
| atomic unit of 1st hyperpolarizability |
3.206361449e-53 C^3 m^3 J^-2 |
| atomic unit of 2nd hyperpolarizability |
6.23538054e-65 C^4 m^4 J^-3 |
| atomic unit of action |
1.054571726e-34 J s |
| atomic unit of charge |
1.602176565e-19 C |
| atomic unit of charge density |
1.081202338e+12 C m^-3 |
| atomic unit of current |
0.00662361795 A |
| atomic unit of electric dipole mom. |
8.47835326e-30 C m |
| atomic unit of electric field |
5.14220652e+11 V m^-1 |
| atomic unit of electric field gradient |
9.717362e+21 V m^-2 |
| atomic unit of electric polarizability |
1.6487772754e-41 C^2 m^2 J^-1 |
| atomic unit of electric potential |
27.21138505 V |
| atomic unit of electric quadrupole mom. |
4.486551331e-40 C m^2 |
| atomic unit of energy |
4.35974434e-18 J |
| atomic unit of force |
8.23872278e-08 N |
| atomic unit of length |
5.2917721092e-11 m |
| atomic unit of mag. dipole mom. |
1.854801936e-23 J T^-1 |
| atomic unit of mag. flux density |
235051.7464 T |
| atomic unit of magnetizability |
7.891036607e-29 J T^-2 |
| atomic unit of mass |
9.10938291e-31 kg |
| atomic unit of mom.um |
1.99285174e-24 kg m s^-1 |
| atomic unit of permittivity |
1.11265005605e-10 F m^-1 |
| atomic unit of time |
2.4188843265e-17 s |
| atomic unit of velocity |
2187691.26379 m s^-1 |
| Avogadro constant |
6.02214129e+23 mol^-1 |
| Bohr magneton |
9.27400968e-24 J T^-1 |
| Bohr magneton in eV/T |
5.7883818066e-05 eV T^-1 |
| Bohr magneton in Hz/T |
13996245550.0 Hz T^-1 |
| Bohr magneton in inverse meters per tesla |
46.6864498 m^-1 T^-1 |
| Bohr magneton in K/T |
0.67171388 K T^-1 |
| Bohr radius |
5.2917721092e-11 m |
| Boltzmann constant |
1.3806488e-23 J K^-1 |
| Boltzmann constant in eV/K |
8.6173324e-05 eV K^-1 |
| Boltzmann constant in Hz/K |
20836618000.0 Hz K^-1 |
| Boltzmann constant in inverse meters per kelvin |
69.503476 m^-1 K^-1 |
| characteristic impedance of vacuum |
376.730313462 ohm |
| classical electron radius |
2.8179403267e-15 m |
| Compton wavelength |
2.4263102389e-12 m |
| Compton wavelength over 2 pi |
3.86159268e-13 m |
| conductance quantum |
7.7480917346e-05 S |
| conventional value of Josephson constant |
4.835979e+14 Hz V^-1 |
| conventional value of von Klitzing constant |
25812.807 ohm |
| Cu x unit |
1.00207697e-13 m |
| deuteron g factor |
0.8574382308 |
| deuteron mag. mom. |
4.33073489e-27 J T^-1 |
| deuteron mag. mom. to Bohr magneton ratio |
0.0004669754556 |
| deuteron mag. mom. to nuclear magneton ratio |
0.8574382308 |
| deuteron mass |
3.34358348e-27 kg |
| deuteron mass energy equivalent |
3.00506297e-10 J |
| deuteron mass energy equivalent in MeV |
1875.612859 MeV |
| deuteron mass in u |
2.01355321271 u |
| deuteron molar mass |
0.00201355321271 kg mol^-1 |
| deuteron rms charge radius |
2.1424e-15 m |
| deuteron-electron mag. mom. ratio |
-0.0004664345537 |
| deuteron-electron mass ratio |
3670.4829652 |
| deuteron-neutron mag. mom. ratio |
-0.44820652 |
| deuteron-proton mag. mom. ratio |
0.307012207 |
| deuteron-proton mass ratio |
1.99900750097 |
| electric constant |
8.85418781762e-12 F m^-1 |
| electron charge to mass quotient |
-1.758820088e+11 C kg^-1 |
| electron g factor |
-2.00231930436 |
| electron gyromag. ratio |
1.760859708e+11 s^-1 T^-1 |
| electron gyromag. ratio over 2 pi |
28024.95266 MHz T^-1 |
| electron mag. mom. |
-9.2847643e-24 J T^-1 |
| electron mag. mom. anomaly |
0.00115965218076 |
| electron mag. mom. to Bohr magneton ratio |
-1.00115965218 |
| electron mag. mom. to nuclear magneton ratio |
-1838.2819709 |
| electron mass |
9.10938291e-31 kg |
| electron mass energy equivalent |
8.18710506e-14 J |
| electron mass energy equivalent in MeV |
0.510998928 MeV |
| electron mass in u |
0.00054857990946 u |
| electron molar mass |
5.4857990946e-07 kg mol^-1 |
| electron to alpha particle mass ratio |
0.000137093355578 |
| electron to shielded helion mag. mom. ratio |
864.058257 |
| electron to shielded proton mag. mom. ratio |
-658.2275971 |
| electron volt |
1.602176565e-19 J |
| electron volt-atomic mass unit relationship |
1.07354415e-09 u |
| electron volt-hartree relationship |
0.03674932379 E_h |
| electron volt-hertz relationship |
2.417989348e+14 Hz |
| electron volt-inverse meter relationship |
806554.429 m^-1 |
| electron volt-joule relationship |
1.602176565e-19 J |
| electron volt-kelvin relationship |
11604.519 K |
| electron volt-kilogram relationship |
1.782661845e-36 kg |
| electron-deuteron mag. mom. ratio |
-2143.923498 |
| electron-deuteron mass ratio |
0.00027244371095 |
| electron-helion mass ratio |
0.00018195430761 |
| electron-muon mag. mom. ratio |
206.7669896 |
| electron-muon mass ratio |
0.00483633166 |
| electron-neutron mag. mom. ratio |
960.9205 |
| electron-neutron mass ratio |
0.00054386734461 |
| electron-proton mag. mom. ratio |
-658.2106848 |
| electron-proton mass ratio |
0.00054461702178 |
| electron-tau mass ratio |
0.000287592 |
| electron-triton mass ratio |
0.00018192000653 |
| elementary charge |
1.602176565e-19 C |
| elementary charge over h |
2.417989348e+14 A J^-1 |
| Faraday constant |
96485.3365 C mol^-1 |
| Faraday constant for conventional electric current |
96485.3321 C_90 mol^-1 |
| Fermi coupling constant |
1.166364e-05 GeV^-2 |
| fine-structure constant |
0.0072973525698 |
| first radiation constant |
3.74177153e-16 W m^2 |
| first radiation constant for spectral radiance |
1.191042869e-16 W m^2 sr^-1 |
| Hartree energy |
4.35974434e-18 J |
| Hartree energy in eV |
27.21138505 eV |
| hartree-atomic mass unit relationship |
2.9212623246e-08 u |
| hartree-electron volt relationship |
27.21138505 eV |
| hartree-hertz relationship |
6.57968392073e+15 Hz |
| hartree-inverse meter relationship |
21947463.1371 m^-1 |
| hartree-joule relationship |
4.35974434e-18 J |
| hartree-kelvin relationship |
315775.04 K |
| hartree-kilogram relationship |
4.85086979e-35 kg |
| helion g factor |
-4.255250613 |
| helion mag. mom. |
-1.074617486e-26 J T^-1 |
| helion mag. mom. to Bohr magneton ratio |
-0.001158740958 |
| helion mag. mom. to nuclear magneton ratio |
-2.127625306 |
| helion mass |
5.00641234e-27 kg |
| helion mass energy equivalent |
4.49953902e-10 J |
| helion mass energy equivalent in MeV |
2808.391482 MeV |
| helion mass in u |
3.0149322468 u |
| helion molar mass |
0.0030149322468 kg mol^-1 |
| helion-electron mass ratio |
5495.8852754 |
| helion-proton mass ratio |
2.9931526707 |
| hertz-atomic mass unit relationship |
4.4398216689e-24 u |
| hertz-electron volt relationship |
4.135667516e-15 eV |
| hertz-hartree relationship |
1.519829846e-16 E_h |
| hertz-inverse meter relationship |
3.33564095198e-09 m^-1 |
| hertz-joule relationship |
6.62606957e-34 J |
| hertz-kelvin relationship |
4.7992434e-11 K |
| hertz-kilogram relationship |
7.37249668e-51 kg |
| inverse fine-structure constant |
137.035999074 |
| inverse meter-atomic mass unit relationship |
1.3310250512e-15 u |
| inverse meter-electron volt relationship |
1.23984193e-06 eV |
| inverse meter-hartree relationship |
4.55633525276e-08 E_h |
| inverse meter-hertz relationship |
299792458.0 Hz |
| inverse meter-joule relationship |
1.986445684e-25 J |
| inverse meter-kelvin relationship |
0.01438777 K |
| inverse meter-kilogram relationship |
2.210218902e-42 kg |
| inverse of conductance quantum |
12906.4037217 ohm |
| Josephson constant |
4.8359787e+14 Hz V^-1 |
| joule-atomic mass unit relationship |
6700535850.0 u |
| joule-electron volt relationship |
6.24150934e+18 eV |
| joule-hartree relationship |
2.29371248e+17 E_h |
| joule-hertz relationship |
1.509190311e+33 Hz |
| joule-inverse meter relationship |
5.03411701e+24 m^-1 |
| joule-kelvin relationship |
7.2429716e+22 K |
| joule-kilogram relationship |
1.11265005605e-17 kg |
| kelvin-atomic mass unit relationship |
9.2510868e-14 u |
| kelvin-electron volt relationship |
8.6173324e-05 eV |
| kelvin-hartree relationship |
3.1668114e-06 E_h |
| kelvin-hertz relationship |
20836618000.0 Hz |
| kelvin-inverse meter relationship |
69.503476 m^-1 |
| kelvin-joule relationship |
1.3806488e-23 J |
| kelvin-kilogram relationship |
1.536179e-40 kg |
| kilogram-atomic mass unit relationship |
6.02214129e+26 u |
| kilogram-electron volt relationship |
5.60958885e+35 eV |
| kilogram-hartree relationship |
2.061485968e+34 E_h |
| kilogram-hertz relationship |
1.356392608e+50 Hz |
| kilogram-inverse meter relationship |
4.52443873e+41 m^-1 |
| kilogram-joule relationship |
8.98755178737e+16 J |
| kilogram-kelvin relationship |
6.5096582e+39 K |
| lattice parameter of silicon |
5.431020504e-10 m |
| Loschmidt constant (273.15 K, 100 kPa) |
2.6516462e+25 m^-3 |
| Loschmidt constant (273.15 K, 101.325 kPa) |
2.6867805e+25 m^-3 |
| mag. constant |
1.25663706144e-06 N A^-2 |
| mag. flux quantum |
2.067833758e-15 Wb |
| Mo x unit |
1.00209952e-13 m |
| molar gas constant |
8.3144621 J mol^-1 K^-1 |
| molar mass constant |
0.001 kg mol^-1 |
| molar mass of carbon-12 |
0.012 kg mol^-1 |
| molar Planck constant |
3.9903127176e-10 J s mol^-1 |
| molar Planck constant times c |
0.119626565779 J m mol^-1 |
| molar volume of ideal gas (273.15 K, 100 kPa) |
0.022710953 m^3 mol^-1 |
| molar volume of ideal gas (273.15 K, 101.325 kPa) |
0.022413968 m^3 mol^-1 |
| molar volume of silicon |
1.205883301e-05 m^3 mol^-1 |
| muon Compton wavelength |
1.173444103e-14 m |
| muon Compton wavelength over 2 pi |
1.867594294e-15 m |
| muon g factor |
-2.0023318418 |
| muon mag. mom. |
-4.49044807e-26 J T^-1 |
| muon mag. mom. anomaly |
0.00116592091 |
| muon mag. mom. to Bohr magneton ratio |
-0.00484197044 |
| muon mag. mom. to nuclear magneton ratio |
-8.89059697 |
| muon mass |
1.883531475e-28 kg |
| muon mass energy equivalent |
1.692833667e-11 J |
| muon mass energy equivalent in MeV |
105.6583715 MeV |
| muon mass in u |
0.1134289267 u |
| muon molar mass |
0.0001134289267 kg mol^-1 |
| muon-electron mass ratio |
206.7682843 |
| muon-neutron mass ratio |
0.1124545177 |
| muon-proton mag. mom. ratio |
-3.183345107 |
| muon-proton mass ratio |
0.1126095272 |
| muon-tau mass ratio |
0.0594649 |
| natural unit of action |
1.054571726e-34 J s |
| natural unit of action in eV s |
6.58211928e-16 eV s |
| natural unit of energy |
8.18710506e-14 J |
| natural unit of energy in MeV |
0.510998928 MeV |
| natural unit of length |
3.86159268e-13 m |
| natural unit of mass |
9.10938291e-31 kg |
| natural unit of mom.um |
2.73092429e-22 kg m s^-1 |
| natural unit of mom.um in MeV/c |
0.510998928 MeV/c |
| natural unit of time |
1.28808866833e-21 s |
| natural unit of velocity |
299792458.0 m s^-1 |
| neutron Compton wavelength |
1.3195909068e-15 m |
| neutron Compton wavelength over 2 pi |
2.1001941568e-16 m |
| neutron g factor |
-3.82608545 |
| neutron gyromag. ratio |
183247179.0 s^-1 T^-1 |
| neutron gyromag. ratio over 2 pi |
29.1646943 MHz T^-1 |
| neutron mag. mom. |
-9.6623647e-27 J T^-1 |
| neutron mag. mom. to Bohr magneton ratio |
-0.00104187563 |
| neutron mag. mom. to nuclear magneton ratio |
-1.91304272 |
| neutron mass |
1.674927351e-27 kg |
| neutron mass energy equivalent |
1.505349631e-10 J |
| neutron mass energy equivalent in MeV |
939.565379 MeV |
| neutron mass in u |
1.008664916 u |
| neutron molar mass |
0.001008664916 kg mol^-1 |
| neutron to shielded proton mag. mom. ratio |
-0.68499694 |
| neutron-electron mag. mom. ratio |
0.00104066882 |
| neutron-electron mass ratio |
1838.6836605 |
| neutron-muon mass ratio |
8.892484 |
| neutron-proton mag. mom. ratio |
-0.68497934 |
| neutron-proton mass difference |
2.30557392e-30 |
| neutron-proton mass difference energy equivalent |
2.0721465e-13 |
| neutron-proton mass difference energy equivalent in MeV |
1.29333217 |
| neutron-proton mass difference in u |
0.00138844919 |
| neutron-proton mass ratio |
1.00137841917 |
| neutron-tau mass ratio |
0.52879 |
| Newtonian constant of gravitation |
6.67384e-11 m^3 kg^-1 s^-2 |
| Newtonian constant of gravitation over h-bar c |
6.70837e-39 (GeV/c^2)^-2 |
| nuclear magneton |
5.05078353e-27 J T^-1 |
| nuclear magneton in eV/T |
3.1524512605e-08 eV T^-1 |
| nuclear magneton in inverse meters per tesla |
0.02542623527 m^-1 T^-1 |
| nuclear magneton in K/T |
0.00036582682 K T^-1 |
| nuclear magneton in MHz/T |
7.62259357 MHz T^-1 |
| Planck constant |
6.62606957e-34 J s |
| Planck constant in eV s |
4.135667516e-15 eV s |
| Planck constant over 2 pi |
1.054571726e-34 J s |
| Planck constant over 2 pi in eV s |
6.58211928e-16 eV s |
| Planck constant over 2 pi times c in MeV fm |
197.3269718 MeV fm |
| Planck length |
1.616199e-35 m |
| Planck mass |
2.17651e-08 kg |
| Planck mass energy equivalent in GeV |
1.220932e+19 GeV |
| Planck temperature |
1.416833e+32 K |
| Planck time |
5.39106e-44 s |
| proton charge to mass quotient |
95788335.8 C kg^-1 |
| proton Compton wavelength |
1.32140985623e-15 m |
| proton Compton wavelength over 2 pi |
2.1030891047e-16 m |
| proton g factor |
5.585694713 |
| proton gyromag. ratio |
267522200.5 s^-1 T^-1 |
| proton gyromag. ratio over 2 pi |
42.5774806 MHz T^-1 |
| proton mag. mom. |
1.410606743e-26 J T^-1 |
| proton mag. mom. to Bohr magneton ratio |
0.00152103221 |
| proton mag. mom. to nuclear magneton ratio |
2.792847356 |
| proton mag. shielding correction |
2.5694e-05 |
| proton mass |
1.672621777e-27 kg |
| proton mass energy equivalent |
1.503277484e-10 J |
| proton mass energy equivalent in MeV |
938.272046 MeV |
| proton mass in u |
1.00727646681 u |
| proton molar mass |
0.00100727646681 kg mol^-1 |
| proton rms charge radius |
8.775e-16 m |
| proton-electron mass ratio |
1836.15267245 |
| proton-muon mass ratio |
8.88024331 |
| proton-neutron mag. mom. ratio |
-1.45989806 |
| proton-neutron mass ratio |
0.99862347826 |
| proton-tau mass ratio |
0.528063 |
| quantum of circulation |
0.0003636947552 m^2 s^-1 |
| quantum of circulation times 2 |
0.0007273895104 m^2 s^-1 |
| Rydberg constant |
10973731.5685 m^-1 |
| Rydberg constant times c in Hz |
3.28984196036e+15 Hz |
| Rydberg constant times hc in eV |
13.60569253 eV |
| Rydberg constant times hc in J |
2.179872171e-18 J |
| Sackur-Tetrode constant (1 K, 100 kPa) |
-1.1517078 |
| Sackur-Tetrode constant (1 K, 101.325 kPa) |
-1.1648708 |
| second radiation constant |
0.01438777 m K |
| shielded helion gyromag. ratio |
203789465.9 s^-1 T^-1 |
| shielded helion gyromag. ratio over 2 pi |
32.43410084 MHz T^-1 |
| shielded helion mag. mom. |
-1.074553044e-26 J T^-1 |
| shielded helion mag. mom. to Bohr magneton ratio |
-0.001158671471 |
| shielded helion mag. mom. to nuclear magneton ratio |
-2.127497718 |
| shielded helion to proton mag. mom. ratio |
-0.761766558 |
| shielded helion to shielded proton mag. mom. ratio |
-0.7617861313 |
| shielded proton gyromag. ratio |
267515326.8 s^-1 T^-1 |
| shielded proton gyromag. ratio over 2 pi |
42.5763866 MHz T^-1 |
| shielded proton mag. mom. |
1.410570499e-26 J T^-1 |
| shielded proton mag. mom. to Bohr magneton ratio |
0.001520993128 |
| shielded proton mag. mom. to nuclear magneton ratio |
2.792775598 |
| speed of light in vacuum |
299792458.0 m s^-1 |
| standard acceleration of gravity |
9.80665 m s^-2 |
| standard atmosphere |
101325.0 Pa |
| standard-state pressure |
100000.0 Pa |
| Stefan-Boltzmann constant |
5.670373e-08 W m^-2 K^-4 |
| tau Compton wavelength |
6.97787e-16 m |
| tau Compton wavelength over 2 pi |
1.11056e-16 m |
| tau mass |
3.16747e-27 kg |
| tau mass energy equivalent |
2.84678e-10 J |
| tau mass energy equivalent in MeV |
1776.82 MeV |
| tau mass in u |
1.90749 u |
| tau molar mass |
0.00190749 kg mol^-1 |
| tau-electron mass ratio |
3477.15 |
| tau-muon mass ratio |
16.8167 |
| tau-neutron mass ratio |
1.89111 |
| tau-proton mass ratio |
1.89372 |
| Thomson cross section |
6.652458734e-29 m^2 |
| triton g factor |
5.957924896 |
| triton mag. mom. |
1.504609447e-26 J T^-1 |
| triton mag. mom. to Bohr magneton ratio |
0.001622393657 |
| triton mag. mom. to nuclear magneton ratio |
2.978962448 |
| triton mass |
5.0073563e-27 kg |
| triton mass energy equivalent |
4.50038741e-10 J |
| triton mass energy equivalent in MeV |
2808.921005 MeV |
| triton mass in u |
3.0155007134 u |
| triton molar mass |
0.0030155007134 kg mol^-1 |
| triton-electron mass ratio |
5496.9215267 |
| triton-proton mass ratio |
2.9937170308 |
| unified atomic mass unit |
1.660538921e-27 kg |
| von Klitzing constant |
25812.8074434 ohm |
| weak mixing angle |
0.2223 |
| Wien frequency displacement law constant |
58789254000.0 Hz K^-1 |
| Wien wavelength displacement law constant |
0.0028977721 m K |
| {220} lattice spacing of silicon |
1.920155714e-10 m |
