Unit Converter - Pressure Converter

Pressure units

The pressure converter enables quick conversion between the most popular pressure units used in plumbing, ventilation, gas, and industrial installations. Simply enter a value in the selected unit, and the calculator will automatically convert it to all other units — including pascals, bars, atmospheres, psi, and millimeters of mercury.

Overview of pressure units

• Physical atmosphere [atm]: a unit of pressure equal to about 101,325 Pa (pascals) and corresponds to atmospheric pressure at sea level.
• Technical atmosphere [at]: a unit of pressure equal to 1 kgf/cm², which is about 0.98 atm or 98 kPa.
• Millibars [mbar]: a unit of pressure equal to 1/1000 bar, or 100 Pa.
• Bars [bar]: a unit of pressure equal to 100 kPa. 1 bar is defined as the pressure exerted by a column of liquid with a density of 1 kg/m³ at a height of 10 meters under standard gravity.
• Pascals [Pa]: the basic unit of pressure in the SI system, corresponding to a force of one newton acting on an area of one square meter.
• Pounds per square inch [psi]: a unit of pressure equal to 1 pound-force per square inch, or about 6.89 kPa.
• Torr [tor]: a unit of pressure equal to 1 mmHg, i.e., the pressure exerted by a column of mercury 1 mm high.
• Meters of water column [msw]: a unit of pressure equal to the pressure exerted by a column of water 1 meter high, or about 9.81 kPa.
• Millimeters of mercury [mmHg]: a unit of pressure equal to the pressure exerted by a column of mercury 1 millimeter high, mainly used in medicine.

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