Find the molecular formula from masses.
The molecular formula for Compound Formula is found by dividing the molecular mass by the empirical formula mass to get the number of formula units, and the mole count follows from mass over molar mass. Many compounds share an empirical formula, so the molecular mass is what picks the actual one.
Compound Formula
Multiplier = molecular mass / empirical formula mass
Multiplier = molecular mass / empirical formula mass The molecular formula for Compound Formula is found by dividing the molecular mass by the empirical formula mass to get the number of formula units, and the mole count follows from mass over molar mass.
Many compounds share an empirical formula, so the molecular mass is what picks the actual one.
This calculator takes 3 inputs: Empirical formula mass, Molecular mass, Compound mass. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.