#1 Free Thermochemistry Calculators 2025

Boiling Point Calculator Calculates boiling point at a different pressure using the Clausius-Clapeyron equation. Normal Boiling Point (T₁ at P₁): °C K (Kelvin) °F Pressure at Normal Boiling Point (P₁):

Arrhenius Equation Calculator Calculate Rate Constant (k) Calculate Activation Energy (Ea) Calculate k₂ at T₂ Calculate Pre-exponential Factor (A) Calculate Temperature (T) Calculate Rate Constant (k) Pre-exponential Factor (A): Units

Advanced pH Calculator Strong Acid Strong Base Weak Acid Weak Base Buffer Solution From [H⁺] From [OH⁻] Strong Acid pH Concentration of Strong Acid (e.g., HCl, HNO₃): MmMµM Strong Base

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