Free Online Chemistry Calculators

Molar mass, molarity, pH, stoichiometry, dilution, percent yield — all the chemistry tools you need, free and instant.

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⚗️ Molar Mass Calculate molar mass, molecular weight, empirical formulas, and percent composition. 5 tools 🧪 Solutions Calculate molarity, dilutions, pH, concentration, and parts per million for solutions. 5 tools 🔥 Reactions Stoichiometry, limiting reagents, theoretical yield, percent yield, and oxidation numbers. 5 tools

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⚗️ Molar Mass Calculator Calculate the molar mass of any chemical compound from its molecular f... ⚗️ Molecular Weight Calculator Find the molecular weight of organic and inorganic compounds by formul... ⚗️ Empirical Formula Calculator Find the simplest whole-number ratio of elements from percent composit... 🧪 Molarity Calculator Calculate molarity (M) from moles of solute and liters of solution.... 🧪 Dilution Calculator Calculate diluted concentration or volume using the C1V1 = C2V2 equati... 🧪 pH Calculator Calculate pH from H+ concentration, or find [H+] and [OH-] from pH.... 🔥 Stoichiometry Calculator Convert between moles of reactants and products using stoichiometric r... 🔥 Limiting Reagent Calculator Identify the limiting reagent and excess reagent for a two-reactant re... 🔥 Theoretical Yield Calculator Calculate the theoretical yield of a product from moles of limiting re...

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ChemCalc provides free, accurate chemistry calculators for students, educators, and professionals. From basic molar mass calculations to stoichiometry and solution chemistry, every tool gives instant results with no registration required.

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