Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.Ĭ provides an online conversion calculator for all types of measurement units. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. millibar: 0.01 mbar: metro coluna água: 0.0001020408 mca: metro coluna de água : 0.0001020408 mH2O: milímetro coluna de água: 0.1020408 mmH2O: milímetro coluna de mercurio: 0.007500617 mmHg: milímeter water column: 0.1020408 mmWC: meter water column: 0.0001020408 mWC: newton por milímetro quadrado: 0. At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. By contrast, psia measures pressure relative to a vacuum (such as that in space). Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. The SI unit is the pascal (Pa), with 1 millibar = 100 pascals (a hectopascal) It is not an SI unit of measure, however it is one of the units used in meteorology when describing atmospheric pressure. Psig to mbar, or enter any two units below: Enter two units to convert From:Ī millibar (mb) is 1/1000th of a bar, a unit for measurement of pressure. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types.You can do the reverse unit conversion from It is the pressure resulting from a force of one pound-force applied to an area of one square inch.Ĭ provides an online conversion calculator for all types of measurement units. The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. Piston engine aircraft with constant-speed propellers also use inHg to measure manifold pressure, which is indicative of engine power produced. The resulting altimeter readings are known as flight levels. It is defined as the pressure exerted by a column of mercury of 1 inch in height at 32 ☏ (0 ☌) at the standard acceleration of gravity.Īircraft operating at higher altitudes (above 18,000 feet) set their barometric altimeters to a standard pressure of 29.92 inHg or 1,013.2 hPa (1 hPa = 1 mbar) regardless of the actual sea level pressure, with inches of mercury used in the U.S. It is still widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere. Inches of mercury or inHg is a non-SI unit for pressure. Psi to inhg, or enter any two units below: Enter two units to convert From: The Pressure in Millibar is equal to the Pound per Square Inch multiplied by 0.0145038. To convert any mbar measurement to psi, use this formula: mbar psi x 0.0145038. You can also convert millibar to pascal, exapascal, petapascal, terapascal, gigapascal, megapascal, kilopascal, hectopascal, dekapascal, decipascal, centipascal, millipascal, micropascal, nanopascal, picopascal, femtopascal, attopascal, newton/square meter, newton/square centimeter, newton/square millimeter, kilonewton/square meter, bar. If you want to convert 10 Millibar to Pound per Square Inch, follow this formula: 10 mbar x 0.0145038 psi per mbar 0.145038 psi. You can do the reverse unit conversion from 30 mbar 0.435114 psi / Convert millibar to psi.
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