All 25 Free Chemistry Calculators

Convert mass in grams to moles using chemical formula or molar mass.

Convert moles to mass in grams given compound molar mass.

Calculate mass, moles, or molar mass interchangeably.

Find compound molecular weight from chemical formula lookup.

Calculate molecular mass in g/mol and Daltons.

Convert mass in grams directly to total number of molecules.

Convert grams to number of atoms using Avogadro's constant.

Convert moles to molecular particle count.

Calculate particle counts from moles using 6.022 × 10²³.

Convert kilodaltons (kDa) to g/mol (1 kDa = 1,000 g/mol).

Convert molar mass in g/mol to kilodaltons (kDa).

Convert Daltons (Da) to g/mol (1 Da = 1 g/mol).

Convert molar mass in g/mol to Daltons (Da).

Convert g/mol to kg/kmol (1:1 identical numerical ratio).

Convert g/mol to mg/mmol (1:1 identical numerical ratio).

Calculate molar concentration (mol/L) from moles/mass and volume.

Convert mass concentration in g/L to molarity (mol/L).

Convert g/mL mass density concentration to molarity.

Calculate molality (mol/kg solvent) for colligative properties.

Solve solution dilutions using C1V1 = C2V2 equation.

Calculate mole ratios, reactant masses, and product yields.

Determine empirical and molecular formulas from percent composition.

Find elemental mass percentage breakdown from chemical formula.

Identify the limiting reagent and excess reactant remaining.

Convert specific energy (J/g) to molar energy (J/mol and kJ/mol).