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Chemical Equation Balancer

Balance chemical equations, including ionic and redox ones, with exact whole number coefficients.

Free, no uploads, no sign-up. Runs 100% in your browser.

How Chemical Equation Balancer works

All maths runs in your browser. Exact fractions and big integers are used where rounding would give wrong answers. The atom and charge counts form a matrix that is solved exactly with fractions, then scaled to the smallest whole numbers.

Input: Text. Output: Text.

How to use Chemical Equation Balancer

  1. Type the equation with an arrow.
  2. Read the balanced result and the atom check.
  3. Copy it.

Tips

  • Exact fractions are used where rounding would give wrong answers.
  • Every tool works offline once the page has loaded.

Chemical Equation Balancer FAQ

Are my files uploaded?
No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
Is it free? Are there limits or watermarks?
Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
Does it work offline?
Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

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