Convert between reactant and product masses using balanced equation coefficients.
Stoichiometry always goes mass to moles, across by the coefficient ratio, then moles back to mass. Attempting to convert mass directly is wrong because mass ratios are not the reaction ratios. The coefficient ratio is the whole content of a balanced equation, and getting it wrong invalidates every downstream figure.
Stoichiometry
moles reactant → × (coefficient ratio) → moles product → × molar mass
moles reactant → × (coefficient ratio) → moles product → × molar mass Stoichiometry always goes mass to moles, across by the coefficient ratio, then moles back to mass. Attempting to convert mass directly is wrong because mass ratios are not the reaction ratios.
The coefficient ratio is the whole content of a balanced equation, and getting it wrong invalidates every downstream figure.
This calculator takes 5 inputs: Mass of reactant available, Molar mass of the reactant, Coefficient of the reactant, Coefficient of the product, Molar mass of the product. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.