**Full name:** atmosphere [standard]

**Plural form:** atmospheres

**Symbol:** atm

**Category type:** pressure

**Scale factor:** 101325

The SI derived unit for pressure is the pascal.

1 pascal is equal to 9.8692326671601E-6 atmosphere [standard].

Valid units must be of the **pressure** type.

You can use this form to select from known units:

The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth's atmospheric pressure at sea level.

atmosphere [standard] to millimeter of mercury [0 °C]

atmosphere [standard] to picopascal

atmosphere [standard] to barad

atmosphere [standard] to micron of mercury [0 °C]

atmosphere [standard] to inch of air [15 °C]

atmosphere [standard] to pound/square inch

atmosphere [standard] to femtopascal

atmosphere [standard] to millitorr

atmosphere [standard] to meganewton/square metre

atmosphere [standard] to centitorr