Atm, which stands for Earth atmospheres at sea level, is a unit of pressure. 1 atm is defined as the pressure at 0 meters above sea level.


To convert from atm to the SI unit of pressure, the pascal, and vice versa:

  • $1\,\mathrm{Pa}=9.8692\times10^{-6}\,\mathrm{atm}$
  • $1\,\mathrm{atm}=101325\,\mathrm{Pa}$

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