Atomic Unit Converter
Energy
Hartrees
eV
kJ/mol
kcal/mol
cm^-1
Joule
Light wavelength in nm
Light frequency in GHz
Lifetime in fs
Lifetime * Energy = 1hbar
FWHM-mapped lifetime in fs
Lifetime * FWHM = 2hbar
Kelvin
Boltzman population ratio at 298.15K
Time
au
fs
ps
ns
Length
au
Angstrom
nm
pm
Mass
au
amu
kg
g
au(energy)
MeV
Electric Field
au
V/Angstrom
V/nm
Light power flux in W/cm^2
Typical sunlight power = 1.4 W/cm2
Light power flux in MW/cm^2
Light power flux in eV/nm^2/fs
Photon flux (3eV) in 10^20/cm^2/s
Photon flux (3eV) in 1/nm^2/fs
Velocity
eV
K
Thermal velocity along 1 DOF (M=1) in au
Thermal velocity along 1 DOF (M=1) in m/s
Thermal velocity along 1 DOF (M=1836) in au
Thermal velocity along 1 DOF (M=1836 au) in Bohr/ps
Thermal momentum along 1 DOF (M=1836 au) in au
Thermal velocity along 1 DOF (M=29152 au) in au
Thermal velocity along 1 DOF (M=29152 au) in Bohr/ps
Thermal momentum along 1 DOF (M=29152 au) in au
Magnetic Field
au
Defined as e*hbar*B/(m_e) = E_h (SI units)
Tesla
Gauss
Earth magnetic field = 0.25-0.65 Gauss