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Moles to Grams Calculator
Convert moles to grams using the molar mass.
From moles to mass
Chemistry constantly moves between moles — a count of particles — and grams, which you weigh. This converter multiplies moles by the molar mass to give the mass.
Two moles of water, at about 18 grams per mole, weigh 36 grams. Enter the moles and the molar mass of your substance for the mass.
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The calculation runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
How does it convert?
Mass equals the number of moles times the molar mass in grams per mole.
Where do I find molar mass?
From the periodic table — sum the atomic masses of the atoms in the formula. Water is about 18 g/mol.
What units?
Moles and grams per mole give a result in grams.
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