Molecular Weight Calculator
Calculate moles, mass, or molecular weight using the relationship: moles = mass / molecular weight.
Molecular Weight from Formula
Enter the molecular formula of the compound.
About this Calculator
This Molecular Weight Calculator allows you to calculate the molecular weight (also known as molar mass) of a chemical compound based on its molecular formula. Simply enter the molecular formula (e.g., H2O, C6H12O6) and click 'Calculate'. The calculator parses the formula, counts the number of each type of atom, and sums the total atomic weights to provide the molecular weight.