Molar Mass Calculator
Calculate total mass from atomic/molecular mass and quantity of moles.
The Molar Mass Calculator helps you find the total mass of a substance when you know its molecular mass (in g/mol) and the number of moles. Molar mass is the mass of one mole of a substance and is essential for stoichiometric calculations in chemistry.
Simply enter the molecular mass of your compound (e.g., water = 18.015 g/mol, NaCl = 58.44 g/mol) and the number of moles you have. The calculator multiplies them to give you the total mass in grams and kilograms.
This is one of the most fundamental calculations in chemistry, used in laboratory work, industrial processes, and academic studies alike.
Frequently Asked Questions
What is molar mass?
Molar mass is the mass of one mole (6.022 x 10^23 particles) of a substance, measured in grams per mole (g/mol).
How do I find the molecular mass of a compound?
Add up the atomic masses of all atoms in the molecular formula. For example, H2O = 2(1.008) + 16.00 = 18.015 g/mol.
What is the difference between molar mass and molecular mass?
They are numerically the same but differ in units. Molecular mass is in atomic mass units (amu), while molar mass is in grams per mole (g/mol).