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Molar Mass Calculator

Calculate the molar mass of any chemical compound instantly.

Enter a chemical formula to calculate its molar mass.

About Molar Mass Calculator

The Molar Mass Calculator is a tool designed to determine the mass of one mole of a chemical substance. It is essential for stoichiometry calculations in chemistry, allowing you to convert between the mass of a substance and the number of moles.

This tool uses the most up-to-date standard atomic weights for each element. Simply enter the chemical formula, and it will break down the composition and calculate the total mass in grams per mole (g/mol).

How to Use

Enter a chemical formula using standard element symbols and numbers:

  • H2O for water
  • NaCl for table salt
  • Ca(OH)2 for calcium hydroxide (parentheses are supported!)
Tutorial

How to use

1
1

Enter Formula

Type the chemical formula of the compound (e.g., H2O, NaCl).

2
2

Instant Calculation

The tool breaks down elements and sums their atomic masses.

3
3

Copy Result

Use the copy button to get the g/mol value.

Use Cases

Use cases

Stoichiometry

"Use molar mass to convert between grams and moles in chemical reactions."

Solution Preparation

"Calculate the exact amount of solute needed for a specific molarity."

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