Molecular Weight Calculator

Molecular Weight Calculator – Calculate Molar Mass of Compounds

A molecular weight calculator helps determine the molar mass of chemical compounds by adding the atomic weights of each element in a formula. This is an essential concept in chemistry used in laboratory calculations and chemical reactions.

Formula for Molecular Weight

The molecular weight is calculated using:

• M = Σ (number of atoms × atomic weight)

Example Calculation

For water (H₂O):

• Hydrogen: 2 × 1.008 = 2.016
• Oxygen: 1 × 16.00 = 16.00
• Total = 18.02 g/mol

Why Molecular Weight Matters

Molecular weight is used in stoichiometry, solution preparation, and chemical analysis. It helps determine how much of a substance is needed for reactions.

Applications

This calculator is useful for:

• Chemistry students and exams
• Laboratory experiments
• Pharmaceutical calculations
• Industrial chemical processes

You can also explore our molarity calculator, current calculator, and power calculator.