Molar Mass Calculator

If you enter a molecular formula (case-sensitive) in the box, this script will try to calculate its molar mass (in grams per mole).
Several recently named elements can be referred to by their "unnamed" symbols (for example, "Mt" [Meitnerium] and "Une" [Unnilennium] both refer to element 109).
To calculate the mass of a hydrate, rewrite it like this:
CuSO4 · 5H2O ⇒ CuSO4 (H2O)5
Copyright © 2005 by Andrew Geng
Molecular formula
Processed formula
Element totals
Molar Mass