Energy Units Converter$
Eh
eV
kJ/mol
kcal/mol
cm-1
THz
K
Ry
nm
Length Units Converter$
a0
Å
nm
Time Units Converter

Time in reallife

s
min
h
d

Time in Molecular Dynamics$

ħ/Eh
fs
ps
ns

Byte Units Converter#
bit
B = char
2 B = short
4 B = int = float
8 B = long = long long = double = *
16 B = long double

$ Mohr et al., "CODATA Recommended Values of the Fundamental Physical Constants: 2014", Journal of Physical and Chemical Reference Data, 45, 043102 (2016); doi: 10.1063/1.4954402

# Data types are of C/C++. The values are got from sizeof operator of C++ with g++ 9.1 on x86_64 Linux system. You may want to check the sizes with your own compiler.

Modified from https://www.colby.edu/chemistry/PChem/Hartree.html. Notice that in this version, significant figures are not considered because we do not want "1 Eh=220000 cm-1", although it is somehow correct.

If you want to add some other dimensions, please let me know.