Molar Mass Calculator

Calculate molecular weight from chemical formulas instantly. Enter a formula like H2O or Ca(OH)2.

Chemical Formula

How to Use

• Enter element symbols with capital letters (H, O, Ca, etc.)
• Use numbers for subscripts (H2O, not H₂O)
• Use parentheses for complex compounds: Ca(OH)2
• Nested parentheses are supported: Fe2(SO4)3

Need more tools? Try our fracmath for additional utilities.

Disclaimer: Results are provided as-is for educational purposes. While we strive for accuracy, please verify critical calculations with authoritative sources.