12 Chemistry Calculators

Enter any chemical formula to calculate molar mass (g/mol) with a full element-by-element breakdown — handles nested parentheses, hydrates, and ionic compounds.

Strong and weak acid/base pH, Henderson-Hasselbalch buffer pH, and buffer ratio finder — with a Ka/pKa table for 20 common acids and biological buffers.

Enter reactants and products separated by → and get the smallest integer coefficients, balanced with step-by-step atom verification.

PV = nRT — fill any four values and solve for the fifth, with six pressure units and four volume units supported.

Enter an ionic compound to find the oxidation state of each element, with the full algebraic working shown — not just the answer.

Chemistry-specific conversions for energy, temperature, pressure, concentration, mass, and atomic radii.

Solubility of ionic compounds in water at 25°C, with the governing rule behind every soluble, insoluble, and slightly-soluble result.

Enter a balanced equation and a known amount, and calculate the moles and masses of every other compound in the reaction.

Enter bonding pairs and lone pairs around a central atom to predict molecular geometry, bond angles, and polarity.

Select two half-reactions to calculate cell potential E°cell, spontaneity, ΔG°, and equilibrium constant K.

Calculate remaining activity, elapsed time, or number of half-lives for any radioactive isotope, including radiocarbon dating.

Characteristic flame colors for metal identification, with emission wavelengths and the chemistry behind each color.