Chemistry › Constant
Mendeleev · Constant
Speed of light in vacuum
Speed of light in vacuum: exact SI value, unit and a compact reference for calculations.
ConstantSI
Exact SI value
299 792 458
Unitm·s⁻¹
This value is exact in the International System of Units. It is not a rounded experimental measurement.
Keep the stated unit with the constant. The power of ten is part of the value.