Equation balancer
Balance a chemical equation
Use formulas like Al + O2 -> Al2O3. Hydrates and charges are not supported in this first version.
Chemistry tools for study, labs, and fast checks
ChemCalc
Balance equations, calculate molar mass, and convert chemistry units in one calm workspace.
Balanced equation
2H2 + O2 -> 2H2O
Fast stoichiometry helpers with clear disclaimers.
Molar mass
Calculate formula mass
Supports parentheses and common element symbols.
Chemistry unit converter
Convert lab and chemistry units
Free chemistry tools
ChemCalc is free to use
ChemCalc is now completely free. To support hosting and future improvements, the site may show Google AdSense ads where allowed by law and consent settings.
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Important chemistry disclaimer
ChemCalc is an educational and productivity tool. Results should be independently verified before use in lab, medical, industrial, regulatory, safety, manufacturing, or academic submission contexts.