How does the Molecular Formula work?

Determine the empirical formula and its formula mass Then: Measure or look up the actual molar mass Then: n = Actual molar mass / Empirical formula mass Then: Molecular formula = empirical formula × n.

Can you give an example of how to use the Molecular Formula?

Example: Input Empirical CH₂O (mass 30) · Actual molar mass 180 gives a result of n=6 → Molecular formula C₆H₁₂O₆ (glucose) (180/30=6).

Is the Molecular Formula free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Molecular Formula?

Our Molecular Formula uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Molecular Formula

⚗️Empirical Formula Calculator

Element: mass% (comma separated)

e.g. C:40, H:6.67, O:53.33

The molecular formula gives the actual number of each type of atom in a single molecule of a compound. It is a whole-number multiple (n) of the empirical formula, where n = Molar mass / Empirical formula mass.

References

›Molecular formula — Wikipedia

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Molecular Formula

⚗️Empirical Formula Calculator

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⚗️Empirical Formula Calculator