Molar Mass Calculator

Molar Mass Calculator computes the precise molecular weight of any chemical compound by summing atomic masses from its formula, essential for stoichiometry and lab preparation.

Molar Mass Calculator

Note: Case sensitive (e.g., use 'Na' instead of 'na'). Parentheses are not supported in this basic version.

Total Molar Mass

18.015

g/mol

Elemental Composition

Hx2
2.016 g
11.2%
Ox1
15.999 g
88.8%

What is the Molar Mass Calculator?

Molar Mass Calculator computes the precise molecular weight of any chemical compound by summing atomic masses from its formula, essential for stoichiometry and lab preparation.

Why use our tool?

  • Instant Results: Powered by modern web technologies, results appear exactly as you type.
  • 100% Free: No hidden fees, no subscriptions, and no registration required to use the Molar Mass Calculator.
  • Mobile Friendly: Works perfectly and beautifully on your smartphone, tablet, or desktop.
  • Privacy First: All calculations are performed directly in your browser. No personal data is sent to our servers.