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The standard atmosphere (symbol: atm) is a unit of pressure defined as 101 325 Pa. It is sometimes used as a reference pressure or standard pressure . It is approximately equal to Earth 's average atmospheric pressure at sea level .
- 101.325 kPa
- 14.69595 psi
- atm
- Pressure
1 kPa = 1,000 Pa: megapascal: MPa: International System of Units (SI) 1 MPa = 1,000,000 Pa: atmosphere: atm: Non-SI (International) 1 atm = 101,325 Pa: pounds per square inch: psi or lbf/in 2: Non-SI (International) 1 psi = 6,894.757 Pa: millimeters of mercury: mmHg: Non-SI (International) 1 mmHg = 133.3224 Pa: bar: bar: Non-SI (International ...
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa), which is equivalent to 1,013.25 millibars, 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.
Standard atmosphere, unit of pressure, equal to the mean atmospheric pressure at sea level. It corresponds to the pressure exerted by a vertical column of mercury (as in a barometer) 760 mm (29.9213 inches) high. One standard atmosphere, which is also referred to as one atmosphere, is equivalent to.
- The Editors of Encyclopaedia Britannica
The standard constant value used for atmospheric pressure at sea level is 1 atm (standard atmosphere) which equals 101325 pascals in SI units, and is equivalent to 29.9213 inches of mercury. 1 atm to mmHg. 1 atmosphere is equal to how many mmHg? 1 atmosphere (atm) = 760.000 mmHg (millimetres of Mercury) Average atmospheric pressure at sea level
Conversion Formula. Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper. The formula to convert from atm to mmHg is: mmHg = atm x 760. Conversion Example.
Oct 19, 2023 · An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases. The atmospheric pressure on Denali, Alaska, United States ...