About the Stoichiometry Calculator
A mole, mass, and particle conversion calculator for balanced equations, in your browser.
What it is
The Stoichiometry Calculator converts a known amount of one species in a balanced chemical equation into moles, mass, or particles of any other species, using the mole ratio from the equation's coefficients. It's built for stoichiometry homework, lab calculations, and quick reactant-to-product conversions.
Features
Any balanced equation
Parses formulas with parentheses and coefficients, like Al2(SO4)3.
Three unit types
Enter or receive amounts in grams, moles, or particles.
Any species pair
Convert from any reactant or product to any other in the equation.
Step-by-step working
See the mole conversion, mole-ratio step, and final unit conversion clearly.