Category

Chemistry Calculators

Molarity, pH, reactions and other chemistry calculations.

76 calculators

Percent Solution

Calculate the percent concentration of any solution (m/v%, w/w%, v/v%). Solve for percent, solute amount, or solution amount.…

Raoult's Law

Calculate vapor pressure of an ideal solution using Raoult's law. Solve for p_solution, p° of the solvent, or mole fraction.…

Molar Mass

Calculate the molar mass of any chemical compound by selecting elements from the periodic table and entering atom counts.…

TDS Calculator

Calculate total dissolved solids (TDS) in water from ion concentrations (chemistry analysis) or electrical conductivity (EC).…

Reconstitution

Calculate the reconstitution concentration of a solution prepared from a dry ingredient and a diluent. Solve for concentration,…

Alligation

Calculate the alligation ratio and volumes to mix two solutions of different concentrations to reach a desired intermediate…

Molecular Weight

Calculate the molecular weight (MW) of any chemical compound by selecting elements and entering atom counts. Results in Da…

Gibbs' Phase Rule

Calculate the degrees of freedom (F) for any thermodynamic system using Gibbs' phase rule: F = C − P + factor. Enter the…

Water Hardness

Calculate total water hardness (mg/L CaCO₃, ppm, mmol/L, gpg) from calcium and magnesium ion concentrations. Supports metric…

Heat of Combustion

Calculate the heat of combustion (higher heating value, HHV) of any fuel using Hc = LHV + Hv × nH₂O/nfuel. Supports 11 predefined…

Ionic Character

Calculate the percent ionic character of a chemical bond from the electronegativity difference (Pauling formula) or from…

Atom Economy

Calculate atom economy (AE) to measure how efficiently reactant atoms are incorporated into the desired product. Supports…