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Balance any equation with exact math — steps, matrix, ions, hydrates, molar mass.
Arrows: ->, = or → · Charges: Fe^3+ or Fe3+ · Electrons: e^-
Chemical Equation Balancer finds the smallest whole-number coefficients for any chemical equation using exact fraction math, shows the element matrix and elimination steps, supports parentheses, hydrates, ions and electrons, and includes a molar mass calculator with percent composition — all offline in your browser.
Balance any chemical equation in the browser using exact rational arithmetic — no floats, no rounded coefficients. Type an equation like C3H8 + O2 -> CO2 + H2O and get the smallest whole-number coefficients instantly, together with the full element-conservation matrix, the Gauss-Jordan elimination trail that produced the answer, and a verification pass over every element. It understands nested parentheses Ca(OH)2 and Fe2(SO4)3, hydrated salts like CuSO4·5H2O, ionic species with charges such as Fe^3+, SO4^2- and electrons e^-, and warns you when an equation is impossible to balance or underdetermined (missing H⁺/H₂O/e⁻ in a redox reaction). A second tab is a molar mass calculator: type any formula and get the molar mass in g/mol plus a percent-composition breakdown per element. Everything runs locally on your device — nothing is uploaded.
Chemical Equation Balancer computes exact whole-number coefficients for complex chemical equations locally in the browser using rational arithmetic. It provides transparent step-by-step Gauss-Jordan elimination matrices, handles specialized inputs like ions and hydrates, and includes an integrated molar mass and percent composition calculator without requiring software installation or accounts.
Good to know: Underdetermined equations require manual inclusion of balancing species like H⁺, H₂O, or electrons, and extremely advanced computational chemistry workflows may require specialized modeling software.
Learn how to balance any chemical equation, view the step-by-step Gauss-Jordan elimination matrix, and calculate molar mass instantly using exact rational arithmetic.
Open the Chemical Equation Balancer tool
Navigate to the Chemical Equation Balancer tool in your web browser to access the local browser-based interface.
Enter your chemical equation
Type or paste your chemical equation into the input field. The tool supports complex formulas including nested parentheses, hydrated salts, ionic species with charges, and electrons.
Generate balanced coefficients and matrix
View the smallest whole-number coefficients instantly alongside the full element-conservation matrix and the Gauss-Jordan elimination trail that produced the answer.
Verify element conservation and redox details
Review the verification pass over every element to ensure accuracy, noting any warnings for impossible or underdetermined equations.
Calculate molar mass and percent composition
Switch to the second tab to type any chemical formula and instantly get its molar mass in g/mol along with a percent-composition breakdown per element.
Estimated time: PT2M
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