Pascals (Pa) to Atmospheres (atm) Converter
Enter a value to instantly convert between pressure units.
1 Pascal = 0 Atmosphere
Key Formulas
Pound per Sq. Inch → Bar
bar = psi × 0.0689476Bar → Pound per Sq. Inch
psi = bar × 14.5038Atmosphere → Pound per Sq. Inch
psi = atm × 14.6959Pound per Sq. Inch → Atmosphere
atm = psi × 0.068046Formula
atm = Pa ÷ 101325One atmosphere is the pressure exerted by Earth's atmosphere at sea level — 101,325 pascals. The atm is commonly used in chemistry (gas laws, equilibrium), physics (fluid mechanics), and diving (depth-pressure calculations). 1 atm also equals 760 mmHg and 29.92 inHg.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A chemist confirming 1 atm = 101,325 Pa for ideal gas law calculations (PV = nRT).
101325 Pa = 1 atm
A physics student calculating 2 atm pressure in Pa for a gas law homework problem.
202650 Pa = 2 atm
A SCUBA diver noting 5 atm = ~50 m depth for pressure equivalence training.
506625 Pa = 5 atm
An engineer converting 10 atm pressure vessel design in Pa for ASME certification.
1013250 Pa = 10 atm