Molar Mass Calculator

Mass (g)
Molar mass (g/mol)
Molar quantity (n)=

What is a Molar Mass Calculator?

A Molar Mass Calculator is a tool used to determine the mass of one mole of a chemical compound or element. The molar mass is expressed in grams per mole (g/mol) and is calculated by summing the atomic masses of all atoms present in a molecule.

For example, the molar mass of water (H₂O) is:

M(H₂O)=(2×1.008)+(1×16.00)=18.016 g/mol

Why Use a Molar Mass Calculator?

  • Chemistry & Stoichiometry: Helps in converting between grams, moles, and molecules.
  • Laboratory Work: Required for preparing chemical solutions and reactions.
  • Pharmaceutical Industry: Determines drug dosages based on molecular composition.
  • Environmental Science: Used in calculating pollutant concentrations.
  • Engineering & Material Science: Important for working with chemical formulations.

How to Use the Calculator?

  1. Identify the chemical formula of the compound (e.g., CO₂, NaCl, C₆H₁₂O₆).
  2. Look up atomic masses of each element from the periodic table.
  3. Multiply each atomic mass by the number of atoms in the formula.
  4. Sum the values to obtain the total molar mass in g/mol.

For example, for carbon dioxide (CO₂):

M(CO₂)=(1×12.01)+(2×16.00)=44.01 g/mol

When is Molar Mass Calculation Used?

  • In chemical reactions: To balance equations and determine reactant/product quantities.
  • For solution preparation: To calculate molarity and concentration.
  • In molecular biology: For calculating molecular weights of DNA and proteins.
  • In industrial applications: For material synthesis and quality control.