Online Chemical Equation Balancer - Instantly Balance Any Reaction

 🔬 Chemical Equation Balancer – Free Online Tool

Balance any unbalanced chemical reaction with our free online chemical equation balancer. Enter reactants and products separately, and get the balanced equation in seconds – supports smart input, auto-formatting, and educational accuracy.

Easily balance any unbalanced chemical reaction with this powerful and smart Chemical Equation Balancer. Whether you're a student, teacher, or researcher, this tool is designed to simplify your chemistry workflow.

Chemical Equation Balancer

The balancer treats = as and now attempts to balance charge.

Use curly braces {} for charges or superscripts (e.g., Fe{+3}, SO4{-2}, {2-}). The tool will display these as superscripts and include charge in balancing.

Use uppercase for the first element letter, lowercase for the second (Na, Cl, Fe).

{+}
{+2}
{+3}
{+4}
{-}
{-2}
{-3}
{-4}
*
**
* Lanthanides
** Actinides
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How to Use the Balancer

  • Enter the equation using the input field or keyboard (⌨️).
  • Use =, , , etc. to separate reactants and products.
  • Use + between multiple species on a side.
  • Use standard element casing (e.g., Fe, Cl).
  • Use () or [] for groups.
  • Use curly braces {} for charges (e.g., {+2}, {2-}, {-}). The tool will display these as superscripts and **attempt to balance charge** along with atoms.
  • Press 'Balance Equation'.

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Example Equations

Click an example to load it:

Simple: H2 + O2 = H2O
Simple: Fe + Cl2 = FeCl3
Parentheses: Ca(OH)2 + H3PO4 = Ca3(PO4)2 + H2O
Complex: K4[Fe(CN)6] + H2SO4 + H2O = K2SO4 + FeSO4 + (NH4)2SO4 + CO


⚙️ Key Features:

  • Clean and intuitive interface: Separate fields for reactants and products to avoid confusion.
  • Auto-formatting of chemical formulas: Type H2O and it displays as H₂O automatically.
  • Smart parsing engine: Supports formulas with parentheses, polyatomic ions, and complex molecules.
  • One-click balance button: Instantly calculate the correct stoichiometric coefficients.
  • Clear error handling: Detects syntax mistakes and provides user-friendly messages.
  • Equation reversal support: Quickly reverse the equation (products ↔ reactants).
  • Mobile-friendly: Works smoothly on both desktop and mobile devices.
  • No installation required: 100% web-based and free to use.

🧬 Supported Chemistry Notation:

  • Complex compounds (e.g., Fe2(SO4)3)
  • Polyatomic ions
  • Multiple reactions
  • Parentheses and subscripted elements
  • Reactions with gases, solids, liquids, and aqueous states



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