How to Use This Calculator

Enter the mass of the substance in grams and its molar mass (grams per mole). Then click the "Calculate Moles" button to get the number of moles.

What This Calculator is Used For

This calculator helps you determine the number of moles from a given mass and molar mass. It is commonly used in chemistry to convert between mass and moles using the formula:

Formula

Moles = Mass / Molar Mass

Example

If you have 18 grams of water (H₂O) and the molar mass of water is approximately 18 g/mol, the calculation would be:

Moles = 18 g / 18 g/mol = 1 mole