Online Molecular Weight Calculator
Calculate molecular weight from a simple chemical formula (e.g. H2O, NaCl).
Frequently Asked Questions
- What format should I use?
- Use element symbol followed by optional count, e.g. H2O, CaCO3, C6H12O6. Parentheses are not supported in this simple version.
- Which elements are supported?
- Common elements with standard atomic weights (H, C, N, O, S, Cl, Na, Ca, etc.). Two-letter symbols are recognized (e.g. Ca, Fe).
- What units is the result in?
- Grams per mole (g/mol), using standard atomic weights.
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