To convert pressure in Pascals to atmospheres:
\[ \text{atm} = \frac{\text{Pascals}}{101325} \]
To convert pressure in psi to atmospheres:
\[ \text{atm} = \frac{\text{psi}}{14.7} \]
To convert pressure in bars to atmospheres:
\[ \text{atm} = \text{bars} \times 0.987 \]