Select the appropriate area unit options and then enter your number into any field of this Pressure Conversion Calculator and get the converted value.
Pressure conversion
The SI unit for pressure is the pascal (Pa), equal to 1 newton per square meter (N/m2, or kg·m−1·s−2). In addition to pascal, its derivatives are also used:
1 hectopascal (hPa) = 100 Pa,
1 kilopascal (kPa) = 1000 Pa,
1 megapascal (MPa) = 106 Pa,
1 gigapascal (GPa) = 109 Pa.
Other units of pressure are also in common use.
The bar is a metric unit of pressure, but not a SI unit. It is defined as exactly equal to 100,000 Pa (100 kPa), or slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar).
The pound per square inch (psi) or, more accurately, pound-force per square inch is the pressure resulting from a force of 1 pound-force applied to an area of 1 square inch. In SI units, 1 psi is approximately equal to 6894.76 Pa.
The technical atmosphere (at) is the pressure resulting from a force of 1 kilogram-force applied to an area of 1 square centimeter and is equal to 98066.5 Pa.
The standard atmosphere (atm) is an established constant. It is approximately equal to typical air pressure at Earth mean sea level and is defined as 101325 Pa.
The Torr is defined as 1/760 of the standard atmosphere: 1 atm = 760 Torr. So 1 Torr is approximately equal to 133.32 Pa.
Manometric units such as the millimeter of mercury, and inch of mercury are often used to express pressures in terms of the height of column of fluid mercury in a manometer.
The inch of mercury (inHg): 1 inHg = 3386.38 Pa,
The millimeter of mercury (mmHg): 1 mmHg = 133.322 Pa.
You can easily do any pressure unit conversions in a fraction of a second using our Pressure Conversion Calculator.