Actual Yield Calculator
Calculate actual yield from theoretical yield and percent yield. Determine real product amounts accounting for reaction efficiency and side reactions.
Free Stoichiometry Calculators
17 toolsMolar mass, mole conversion, limiting reagent, and yield calculators. Browse our free stoichiometry tools below — no sign-up required.
Atom Economy Calculator
Calculate atom economy for chemical reactions. Measure reaction efficiency by comparing useful product mass to total reactant mass for green chemistry.
Avogadro's Number Calculator
Convert between moles, particles, atoms, molecules, and formula units using Avogadro's number (6.022 × 10²³). Essential stoichiometry tool.
Chemical Equation Balancer Calculator
Balance chemical equations by entering reactants and products. Get stoichiometric coefficients, molar ratios, and conservation of mass verification.
Grams to Moles Calculator
Convert grams to moles and moles to grams using molar mass. Supports all elements and common compounds with an extensive molecular weight database.
Molar Mass Calculator
Calculate molar mass from chemical formulas with parentheses support and all 118 elements. Includes grams-to-moles conversion, composition breakdown, percent bars, and common compound presets.
Molar Ratio Calculator
Calculate molar ratios between reactants and products in chemical reactions. Determine stoichiometric proportions for any balanced equation.
Molarity Calculator
Calculate molarity, moles, volume, or mass of solute for solution preparation. Includes dilution calculations and common solution recipes.
Mole Calculator
Universal mole converter: between moles, grams, particles, and volume of gas at STP. Complete stoichiometry conversion tool for chemistry.
Mole Fraction Calculator
Calculate mole fractions for mixtures and solutions. Determine composition, partial pressures, and colligative property inputs from component moles.
Molecular Weight Calculator
Calculate molecular weight from chemical formula. Supports elements, compounds, hydrates, and polymers with a full periodic table database.
Moles to Atoms Calculator
Convert moles to atoms, molecules to atoms, and grams to atoms. Calculate total atom counts in compounds with multi-atom molecules.
Percent Composition Calculator
Calculate the percent composition by mass of each element in a chemical compound. Essential for empirical formula determination and analytical chemistry.
Percent Yield Calculator
Calculate percent yield from actual and theoretical yields. Compare reaction efficiency across conditions, identify limiting reagents, and benchmark synthesis performance.
Percentage Concentration to Molarity Calculator
Convert weight/volume percent, weight/weight percent, and volume/volume percent concentrations to molarity. Includes density and dilution support.
PPM to Molarity Calculator
Convert parts per million (ppm), parts per billion (ppb), and mg/L to molarity. Essential for environmental chemistry, water quality, and trace analysis.
Theoretical Yield Calculator
Calculate theoretical yield from limiting reagent, stoichiometry, and molar masses. Compare reagents, identify excess, and plan synthesis quantities.