Standard atmosphere (unit)

The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 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.[1]

Unit ofPressure
1 atm in ...... is equal to ...
   SI units   101.325 kPa
   US customary units   14.69595 psi
   other metric units   1.013250 bar

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