Chemical Equation Balancer
Auto-balance any chemical reaction
Balanced equation
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📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Chemical equation balancer
Auto-balance chemical reactions using linear algebra.
How to use this tool
- 1
Enter the equation
Like H2 + O2 = H2O, or use -> for the arrow.
- 2
Click balance
Solver uses linear algebra to find smallest integer coefficients.
- 3
Copy result
Balanced equation shown with all coefficients filled in.
Frequently Asked Questions
What separators work?
Use + between species, = or -> between sides. Examples: H2 + O2 = H2O works; Fe + HCl -> FeCl3 + H2 works.
Why linear algebra?
Each element produces one equation. Coefficients are unknowns. We solve the null space to get integer ratios.
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