Molecular formula calculator
Molecular formula from an empirical formula and experimental molar mass.
Calculator
How to use
Molecular formula
Compare experimental molar mass to the empirical formula mass:
$$n \approx \frac{M_{\text{molecular}}}{M_{\text{empirical}}}$$
The tool expects n to be very close to a whole number.
When to use
- After composition analysis when you know M experimentally.
- Verifying CH₂O vs C₆H₁₂O₆-type problems.
Educational use only. Double-check values for labs, homework, and exams.