How do I enter a formula?

Enter the chemical formula like H2O, NaCl, C6H12O6. Use parentheses for groups like Ca(OH)2.

What elements are supported?

All elements from the periodic table are supported with accurate atomic masses.

Does it show element breakdown?

Yes, we show the contribution of each element to the total molar mass.

Molar Mass Calculator

Calculate the molar mass of chemical compounds from their formula.

Chemical Formula

Enter formula using element symbols (e.g., H2O, NaCl, Ca(OH)2, Fe2(SO4)3)

Common compounds:

Common Elements

H = 1.008 C = 12.011 N = 14.007 O = 15.999 Na = 22.990 Cl = 35.453 Ca = 40.078 Fe = 55.845

What is this tool?

A Molar Mass Calculator is a chemistry tool that calculates the molecular weight (molar mass) of chemical compounds from their chemical formula. It uses accurate atomic masses from the periodic table to compute the total mass of all atoms in a molecule. Essential for chemistry students working with stoichiometry, reactions, and chemical calculations.

How to use this tool?

1. Enter the chemical formula (e.g., H2O, NaCl, C6H12O6) 2. Use parentheses for groups like Ca(OH)2 or (NH4)2SO4 3. Click "Calculate" to compute molar mass 4. View the total molar mass in g/mol 5. See breakdown by element showing each element's contribution 6. Use for stoichiometry, reaction calculations, or homework

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