Reaction balance checker
Verify whether your integer coefficients and molecular formulas conserve each element (parses formulas like H2O, Ca(OH)2).
Calculator
How to use
Balance checker
This tool counts atoms (with your coefficients) on both sides. It does not auto-solve coefficients—adjust them until the checker reports balanced.
Supports parentheses in formulas (e.g. Ca(OH)₂, (NH₄)₂SO₄).
When to use
- Double-checking homework equations before stoichiometry.
- Teaching conservation of mass in reactions.
Educational use only. Double-check values for labs, homework, and exams.