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Molar Mass Calculator

Compute molar mass from a chemical formula.

Compute molar mass from a formula (e.g. H2O, Ca(OH)2, Fe2(SO4)3).

Formula: H2O
Molar mass: 18.01528 g/mol
H: 2 × 1.00794 = 2.01588
O: 1 × 15.99940 = 15.99940

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Compute molar mass from a chemical formula. Everything runs in your browser.

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