Stoichiometry calculator
Convert mass of reactant A to mass of product or related species B using molar masses and balanced coefficients.
Calculator
How to use
Mass-to-mass stoichiometry
$$m_B = \frac{m_A}{M_A} \times \frac{b}{a} \times M_B$$
- Coefficients a and b come from your balanced equation for the path A → B.
- Keep a consistent substance on each side (e.g. same target product your problem asks for).
When to use
- Synthesis and reaction yield estimates before lab.
- Homework that gives grams of one reagent and asks for grams of another species.
Educational use only. Double-check values for labs, homework, and exams.