Molar Mass Calculator

Free online molar mass calculator. Find the molecular weight and elemental composition of any chemical compound.

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%

How to use the Molar Mass Calculator?

Using our free online Molar Mass Calculator is incredibly simple and fast. Just enter your values in the input fields, and the calculator will instantly provide the accurate result without needing to click any buttons or reload the page. This tool is designed to save you time and provide exact calculations for all your needs.

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.