Since atmospheric pressure at sea level is around 14.7 psi, this will be added to any pressure reading made in air at sea level.

Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure.

Water - Properties at Gas-Liquid Equilibrium Conditions - Figures and tables showing how the properties of water changes along the boiling/condensation curve (vapor pressure, density, viscosity, thermal conductivity, specific heat, Prandtl number, thermal diffusivity, entropy and enthalpy).You can do the reverse unit conversion fromīar to psia, or enter any two units below: Enter two units to convert From:.

Unit Factor Method - Convert between units with the unit factor or factor-label method.

Unit Converter with commonly used Units - Common converting units for Acceleration, Area, Density, Energy, Energy per unit mass, Force, Heat flow rate, Heat flux, Heat generation per unit volume and many more.

STP - Standard Temperature and Pressure and NTP - Normal Temperature and Pressure - The definition of STP - Standard Temperature and Pressure and NTP - Normal Temperature and Pressure.

Steel Pipes Schedule 40 - Pressure Loss - Water flow and pressure loss in schedule 40 steel pipes - Imperial and SI units - gallons per minute, liters per second and cubic meters per hour.

Pressure - Converting head (ft or m) to pressure (psi or bar, kg/cm 2) and vice versa. head units - like lb/in 2, atm, inches mercury, bars, Pa and more.

Pressure Energy - Calculate the potential of pressure energy in a incompressible fluid.

Pressure - Introduction to pressure - online pressure units converter.

Hazen-Williams Pressure Loss Equation - The Hazen-Williams equation can be used to calculate the pressure drop (psi) or friction loss in pipes or tubes.

Barometric Pressure - Pressure in psi, psf and kPa - Convert between barometric pressure inches Hg, psi and psf.

Ammonia - Vapour Pressure at Gas-Liquid Equilibrium - Figures and table with ammonia saturation pressure at boiling points, SI and Imperial units.Ammonia - Properties at Gas-Liquid Equilibrium Conditions - Figures and tables showing how the properties of liquid and gaseous ammonia changes along the boiling/condensation curve (temperature and pressure between triple point and critical point conditions).Pumps - Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more.Involving velocity, pressure, density and temperature as functions of space and time. Fluid Mechanics - The study of fluids - liquids and gases.Basics - The SI-system, unit converters, physical constants, drawing scales and more.

Note! - pressure is 'force per unit area' and commonly used pressure units like kg/cm 2 and similar are in principle not correct since kg is a mass unit.

Psi to bar