Air compressor pressure conversion (Mpa, Bar, PSI)

PSI and Mpa, Bar is the unit of measurement pressure, PSI (Pound per square inch) is defined as pounds per square inch, the full name of PSI in English. P is pounds, S is square, and I is inches. Converting all the units to metric units gives:

1Bar≈14.5PSI=0.1 Mpa; 1PSI=6.895kPa=0.06895bar

Countries such as Europe and the United States are accustomed to using PSI as a unit.

In China, we generally describe the pressure of gas in "kg" (instead of "jin"), and its unit is "kg/cm^2", that is, one kilogram of pressure is one kilogram of force acting on one square centimeter.

Europe and China also use MPa, while in the United States the commonly used unit is "PSI", the specific unit is "lbf/in2", which is "pound force/square inch", this unit is like the Fahrenheit temperature scale (F).

In addition, there are pressure units such as Pa (Pascal, one Newton acts on one square meter), KPa, Mpa, Bar, millimeters of water, millimeters of mercury, etc.

1 bar (bar) = 0.1 megapascals (MPa) = 100 kilopascals (KPa) = 1.0197 kg/square centimeter

1 standard atmospheric pressure (ATM) = 0.101325 megapascals (MPa) = 1.0333 bar (bar)

Since the unit difference is very small, it can be written as:

1 bar (bar) = 1 standard atmospheric pressure (ATM) = 1 kg/square centimeter = 100 kilopascals (KPa) = 0.1 megapascals (MPa)

The conversion of PSI is as follows:

1 standard atmosphere (atm) = 14.696 pounds per inch2 (psi)

Pressure conversion relationship:

Pressure 1 bar (bar) = 10^5 Pa (Pa) 1 dyne/cm2 (dyn/cm2) = 0.1 Pa (Pa)

1 Torr (Tor) = 133.322 Pa (Pa) 1 mm Hg (mmHg) = 133.322 Pa (Pa)

1 mm water column (mmH2O) = 9.80665 Pa (Pa)

1 Engineering atmospheric pressure = 98.0665 kilopascals (kPa)

1 kilopascal (kPa) = 0.145 pounds force/inch2 (psi) = 0.0102 kilogram force/cm2 (kgf/cm2) = 0.0098 atmospheric pressure (atm)

1 pound force/inch2 (psi) = 6.895 kilopascals (kPa) = 0.0703 kilogram force/cm2 (kg/cm2) = 0.0689 bar (bar) = 0.068 atmosphere (atm)

1 physical atmospheric pressure (atm) = 101.325 kilopascals (kPa) = 14.696 pounds per inch 2 (psi) = 1.0333 bar (bar)

PSI and MPa pressure conversion table

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