Empirical & Molecular Formula Calculator
Find the empirical formula from mass percentages (or masses) and the molecular formula from the molar mass.
How to use the Empirical & Molecular Formula Calculator
- Enter or select: Element percentages or masses.
- Fill in what you know of: Molar mass (optional) β leave the unknown empty.
- The results (Empirical formula, Empirical formula mass, Molecular formula, Mole ratios) are calculated instantly as you type.
- Use βCopy linkβ to share the calculation with the same input values.
Formula
- nα΅’ = mα΅’ / Mα΅’, divide by the smallest, scale to whole numbers
- n = M_molecular / M_empirical