Stoichiometry & gases Calculators
Move cleanly between mass, amount, particles, reacting ratios, yields and gas quantities.
Moles, mass & particles
Convert between mass, amount of substance and number of particles using molar mass and Avogadro’s constant, with full working.
Open calculatorEmpirical formula
Convert element masses or percentages into a simplest whole-number empirical formula, then optionally obtain a molecular formula.
Open calculatorLimiting reagent
Identify the limiting reactant from amounts in moles and stoichiometric coefficients, then calculate theoretical product amount.
Open calculatorPercentage yield
Calculate percentage yield from experimental and theoretical yield in matching units, with the substituted formula shown.
Open calculatorAtom economy
Calculate atom economy from a balanced equation using stoichiometric coefficients and molar masses.
Open calculatorIdeal gas equation
Solve PV = nRT for pressure, volume, amount or temperature using kPa, dm³, mol and K.
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