New International System Of Units

Physical Constant	Exact Value
ground state hyperfine splitting frequency of Cs-133	9,192,631,770 s−1
speed of light	299,792,458 m s−1
Plank constant	6.62607015 × 10−34 kg m2 s−1
elementary charge	1.602176634 × 10−19 A s
Boltzmann constant	1.380649 × 10−23 kg m2 K−1 s−2
Avogadro constant	6.02214076 × 1023 mol−1