About this vapor pressure converter
Convert vapor pressure units for chemistry, distillation, meteorology, vacuum work, process engineering, and thermodynamic calculations.
Vapor pressure is the equilibrium pressure from a vapor above its liquid or solid phase at a given temperature.
Units covered
Pressure units
Pa, kPa, MPa, bar, mbar, atm, Torr, inHg, mmHg, psi, and kgf/cm².
Chemical processes
Helpful for boiling point checks, distillation, solvent handling, and phase-equilibrium data.
Vacuum and weather
Torr, mmHg, inHg, and atm support laboratory and meteorological references.
How to use it
- Enter the vapor pressure value.
- Select the unit used by your data source and the unit you need.
- Remember vapor pressure changes with temperature, so compare values at the same temperature.