Molecular Weight Calculator
Calculate molecular weight from chemical formulas
Enter Chemical Formula
Enter a chemical formula (e.g., H2O, Ca(OH)2, C6H12O6)
Use uppercase for first letter, lowercase for second (e.g., Ca not CA)
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Common Examples
How to Use
🔤 Element Symbols
Use proper capitalization: H, He, Li (not h, HE, li)
🔢 Numbers
Write subscripts as regular numbers: H2O, not H₂O
( ) Parentheses
Use for groups: Ca(OH)2, Al2(SO4)3
About
⚛️ Molecular Weight
Sum of atomic weights of all atoms in a molecule
📊 Units
Measured in g/mol (grams per mole)
🧪 Applications
Used in stoichiometry, concentration calculations
Supported Elements
All 118 elements from the periodic table are supported, from Hydrogen (H) to Oganesson (Og).