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Convert between mass, moles and particle counts, and derive composition and formulas from analytical data. These are the…
Everything needed to prepare, dilute and convert between solution concentration units at the bench. Aimed at lab technicians…
Balance reactions and convert between reactants and products, then evaluate how much product a run should and did give. Core…
The classical gas laws plus mixture and diffusion relations, solvable for any unknown variable in consistent units. Used by…
pH and pOH from any starting point, weak-acid and weak-base equilibria, buffer design and titration arithmetic. Daily work for…
Equilibrium constants, direction of shift, and precipitation/solubility predictions. Needed by general chemistry students and by…
Heat, enthalpy, entropy and free energy for reactions and calorimetry experiments. Used by general and physical chemistry…
Solution property shifts that depend on particle count, plus vapor-liquid behavior and distillation basics. Serves physical…
Rate laws and temperature dependence, cell potentials and electrolysis mass, and spectrophotometric quantitation. Used by…
Most used in chemistry & chemical engineering
- Molar Mass CalculatorIUPAC standard atomic weights (abridged, 2021)Type a chemical formula and this calculator returns its molar mass in grams per mole, together with the mass each element…
- Moles to Grams CalculatorSI mole definition (BIPM, 2019) and IUPAC standard atomic weightsThis converts between moles and grams in either direction using n = m ÷ M. Tell it what you have — an amount in moles you need…
- Percent Composition CalculatorIUPAC standard atomic weights (abridged, 2021)This calculator breaks a chemical formula into the mass percent contributed by each element, so you can check a CHN elemental…
- Empirical Formula CalculatorIUPAC standard atomic weights (abridged, 2021)Give this calculator the mass percentages or the raw masses of the elements in a compound and it returns the empirical formula…
- Molarity CalculatorIUPAC definition of amount concentration (mol/L)Molarity is moles of solute per litre of finished solution. This calculator works the relationship in all three directions: it…
- Solution Dilution Calculator (C1V1 = C2V2)Conservation of solute (C₁V₁ = C₂V₂)Enter the strength of the stock you have, the strength you want and the final volume you need, and this calculator returns the…
- Chemical Equation BalancerConservation of mass (Lavoisier) solved as a linear null-space problemType an unbalanced equation such as C3H8 + O2 = CO2 + H2O and this returns the smallest set of whole-number coefficients that…
- Stoichiometry Calculator (Mole Ratio)Mole-ratio method from a balanced chemical equationGive this calculator a known amount of one species in a balanced equation and it converts it into any other species using the…
- Limiting Reagent CalculatorStoichiometric mole-ratio methodWhen you charge a reaction with two reactants, one of them runs out first and stops the reaction. That one is the limiting…
- Theoretical Yield CalculatorStoichiometric mole-ratio methodThe theoretical yield is the most product a reaction can possibly deliver from the reactant that runs out first, assuming…
- Percent Yield CalculatorPercent yield = actual / theoretical × 100Percent yield compares what you actually isolated with the maximum the stoichiometry allowed. Enter the mass you weighed and…
- Boyle's Law CalculatorBoyle's law (1662), the isothermal limit of the ideal gas lawBoyle's law says that for a fixed amount of gas held at constant temperature, pressure and volume are inversely proportional…