Molar Mass Calculator

Calculate the molar mass of any chemical compound

Results

Chemical Formula:

Molar Mass: g/mol

How to Use This Calculator

  • Enter the chemical formula in the input field (e.g., H2O for water, C6H12O6 for glucose)
  • Click the "Calculate Molar Mass" button
  • View the results showing the molar mass and element breakdown

Accepted Formats

  • Simple formulas: NaCl, H2SO4
  • Parentheses: Al2(SO4)3
  • Hydrates: CuSO4·5H2O (use the middle dot character)

Description

This molar mass calculator helps you determine the molecular weight of any chemical compound by entering its formula. It's an essential tool for chemistry students, researchers, and professionals who need to calculate molecular weights quickly and accurately.

Uses of the Molar Mass Calculator

1. Chemical Calculations: Essential for stoichiometric calculations in chemical reactions
2. Solution Preparation: Helps determine amounts needed for specific molar solutions
3. Empirical Formula Determination: Useful when working with percent composition data
4. Laboratory Work: Saves time during experiments and analysis
5. Homework Help: Students can verify their manual calculations

Instructions for Use

1. Enter the chemical formula in the input box (e.g., H2O for water)
2. Click the "Calculate Molar Mass" button

  •  The entered chemical formula
  • Total molar mass in g/mol
  • Detailed breakdown of each element's contribution

Accepted Formula Formats

  • Simple formulas: NaCl, H2SO4
  • Formulas with parentheses: Al2(SO4)3
  • Hydrates: CuSO4·5H2O (use the middle dot character)

Molar Mass Formula

The molar mass is calculated by summing the atomic masses of all atoms in the molecule:

Molar Mass = Σ(Number of atoms of each element × Atomic mass of that element)

For example, for water (H2O):

(2 × 1.008 g/mol for H) + (1 × 15.999 g/mol for O) = 18.015 g/mol

This calculator handles all the complex parsing and calculations automatically, making it easy to get accurate molar mass values for any chemical compound.

3. View the results showing: