🧪 Molecular Weight Calculator
Enter a chemical formula to calculate its molar mass.
Supports brackets (), [], hydrates with dot (·), and element counts.
What is Molecular Weight?
Molecular weight (or molar mass) is the mass of one mole of a substance, measured in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a molecule. For example, water (H₂O) has a molecular weight of approximately 18.015 g/mol.
How to Use This Calculator
- Type any chemical formula into the input box (e.g., NaCl, H2SO4, Al2(SO4)3).
- Click the Calculate button.
- Instantly see the molecular weight and a breakdown of each element.
Why Molecular Weight Matters
Knowing the molecular weight is essential in chemistry for preparing solutions, stoichiometry, and understanding reaction yields. It helps scientists and students convert between grams and moles accurately.
- ✅ Lab experiments
- ✅ Drug formulation
- ✅ Chemical engineering
- ✅ Academic study
Tip: Use square brackets and parentheses interchangeably, and separate water of crystallization with a dot (·) like CuSO4·5H2O.
