Frequently Asked Questions
Everything you need to know about the Chemical Equation Balancer.
How does the chemical equation balancer work?
Enter your unbalanced equation; it builds an element-count matrix and solves for the smallest whole-number coefficients using linear algebra.
Is it free?
Completely free, no sign-up, downloads, or limits.
What syntax should I use?
Standard chemical formulas separated by +, with -> or = as the reaction arrow, e.g. Fe + O2 -> Fe2O3.
Can it handle hydrates and nested parentheses?
Yes, formulas like Ca(OH)2 and CuSO4.5H2O are parsed correctly.
What if the equation can't be balanced?
It reports clearly that no valid integer balance was found, rather than returning an incorrect result.
What if my equation is already balanced?
It's recognized and confirmed as already balanced.
Does it verify the result?
Yes, an atom-count table shows every element matching on both sides after balancing.
Does it guess coefficients or actually solve for them?
It solves the underlying linear system exactly โ no trial and error.
Is my data stored?
No; everything runs in your browser and isn't stored or sent anywhere.
Does it work on mobile?
Yes, fully responsive on all screen sizes.