Equation Balancer

Type an unbalanced reaction and watch the coefficients solve themselves.

IntermediateWeb appEducation10–20hAI-buildable 4/5no setup

Parse a chemical equation, build the matrix of element counts, and solve for the smallest whole-number coefficients. It's linear algebra with a satisfying answer, wrapped in a parser that has to cope with subscripts, parentheses and charges.

Logic

Useful

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Core features · 6

Enter an unbalanced equation in plain text
Formulas parse including subscripts and nested parentheses
Coefficients solve to the smallest whole numbers
The balanced equation renders with proper subscript formatting
Impossible equations are reported rather than returning nonsense
The element-count matrix can be shown as working

The interesting part

Parsing nested formula groups correctly
Solving the null space and scaling to integers
Detecting an unbalanceable equation rather than looping

Once it works

Add ionic equations with charge balancing
Add molar mass calculation for each species
Add a step-by-step explanation of the solve

Suggested stack