Chemistry calculators

Moles, concentrations, and stoichiometry — step by step.

Solution concentration, dilution, and reaction math — with careful unit handling and explanations of the underlying relationships.

Calculators
258
Topics: All Solutions (54) Reactions (19)
258 results
Chemistry / Solutions

Gas Density Calculator

Compute the density of an ideal gas at given pressure and temperature from its molar mass, using ρ = PM/(RT).

basic
13,812 3.8 1 min
Chemistry / Reactions

Atomic Mass Calculator

Compute the weighted-average atomic mass of an element with two stable isotopes from each isotope's mass and natural abu...

basic
11,940 4.1 1 min
Chemistry / Reactions

Nernst Equation Calculator

Compute the actual cell potential E from the standard potential E°, the number of electrons transferred n, and the react...

basic
23,564 4.7 1 min
Chemistry / Reactions

Beer-Lambert Law Calculator

Compute the absorbance of a solution at a single wavelength from the molar absorptivity ε, the path length ℓ, and the co...

basic
4,488 5.0 1 min
Chemistry / Solutions

Henry's Law Calculator

Compute the dissolved concentration of a gas in solution from its partial pressure above the liquid and its Henry's law...

basic
18,992 4.6 1 min