Molar Mass Calculator

Compute molar mass of a compound from its chemical formula (H2O, C6H12O6, etc.).

Calculator Science & Engineering Updated Apr 19, 2026
How to Use
  1. Enter a formula like H2O or Ca(OH)2.
  2. Parentheses and subscript multipliers supported.
Formula
Composition

Format

Basic
H2O · CO2 · NaCl
Parentheses
Ca(OH)2 · Al2(SO4)3
Subscripts
Digit after element = count

Frequently Asked Questions

Case matters?

Yes — element symbols are case-sensitive. "Co" = cobalt, "CO" = carbon + oxygen.

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