Equilibrium Constant Calculator
Free calculate equilibrium constant (kc, kp) for chemical reactions using concentrations and partial pressures.
Enter Reaction Data
Concentrations
Results
Enter reaction data to calculate equilibrium constant
Equilibrium Constant Formulas
Concentration Equilibrium
Kc = [C]ᶜ[D]ᵈ / [A]ᵃ[B]ᵇ
- • Kc = Concentration equilibrium constant
- • [A], [B] = Reactant concentrations
- • [C], [D] = Product concentrations
- • a, b, c, d = Stoichiometric coefficients
Pressure Equilibrium
Kp = (PC)ᶜ(PD)ᵈ / (PA)ᵃ(PB)ᵇ
- • Kp = Pressure equilibrium constant
- • PA, PB = Reactant partial pressures
- • PC, PD = Product partial pressures
- • Kp = Kc(RT)^Δn