#1 Free Thermochemistry Calculators 2025

Nernst Equation Calculator Standard Cell Potential (E°): V Temperature (T): °C K (Kelvin) Number of Electrons Transferred (n): Reaction Quotient (Q) Input Method: Enter Q directly Calculate Q from species

Molar Volume Calculator Ideal Gas Real Substance Ideal Gas (Vm = RT/P) Temperature (T): °C K (Kelvin) °F Pressure (P): atm Pa (Pascal) kPa (kilopascal) mmHg (torr) psi Real Substance

Solution Concentration Calculator Select Concentration Type: Molarity (M) Molality (m) % Mass (w/w) % Volume (v/v) Mole Fraction (X) Parts Per Million (ppm) Parts Per Billion (ppb) Show Theory &

Vapor Pressure Calculator Calculates vapor pressure at a different temperature using the Clausius-Clapeyron equation. Known Vapor Pressure (P₁): atm Pa (Pascal) kPa mmHg (torr) bar Temperature for P₁ (T₁): °C