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

Serial Dilution Calculator

Compute the final concentration after N serial dilutions at a 1-in-R dilution factor (e.g., five 1:10 dilutions). Report...

basic
24,482 4.2 1 min
Chemistry / Solutions

Normality Calculator

Compute the normality (N) of a solution from its molarity (M) and the number of equivalents per mole.

basic
16,630 4.4 1 min
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
13,813 3.8 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
18,993 4.6 1 min
Chemistry / Solutions

pOH Calculator

Compute pOH from hydroxide ion concentration and the matching pH at 25 °C.

basic
18,221 4.2 1 min