Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). It equals the sum of the atomic masses of all atoms in the molecular formula.

How do I find the molar mass of glucose (C6H12O6)?

Add up: C (12.011 x 6) + H (1.008 x 12) + O (15.999 x 6) = 72.066 + 12.096 + 95.994 = 180.156 g/mol.

Molar Mass Calculator

Find the molar mass (molecular weight) of a chemical compound by entering the atomic masses and number of atoms for each element. Essential for stoichiometry, solution preparation, and chemical analysis.

Inputs

Element 1 Atomic Mass (g/mol)

e.g. Carbon = 12.011

Element 1 Count

Element 2 Atomic Mass (g/mol)

e.g. Hydrogen = 1.008

Element 2 Count

Element 3 Atomic Mass (g/mol)

e.g. Oxygen = 15.999

Element 3 Count

Results

Molar Mass

180.156 g/mol

Element 1 %

40.0%

Element 2 %

6.7%

Molar Mass Breakdown

Parameter	Value
Element 1 Contribution	72.0660 g/mol
Element 1 Mass %	40.00%
Element 2 Contribution	12.0960 g/mol
Element 2 Mass %	6.71%
Element 3 Contribution	95.9940 g/mol
Element 3 Mass %	53.28%
Total Molar Mass	180.1560 g/mol
Mass of 1 mmol	0.180156 g
Moles in 1 g	5.5507e-3 mol

Frequently Asked Questions

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