Kilopascals (kPa) to Atmospheres (atm) Converter
Enter a value to instantly convert between pressure units.
1 Kilopascal = 0.0099 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 = kPa ÷ 101.325One atmosphere equals 101.325 kPa — since 1 atm = 101,325 Pa and 1 kPa = 1000 Pa, then 101,325 ÷ 1000 = 101.325. Chemistry (gas laws), physics (fluid mechanics), and diving (depth-pressure) use atm. At sea level, atmospheric pressure is approximately 101.325 kPa.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A chemist confirming 1 atm = 101.325 kPa for ideal gas law calculations (PV = nRT).
101.325 kPa = 1 atm
A physics student calculating 2 atm in kPa for gas law homework.
202.65 kPa = 2 atm
A SCUBA diver noting 5 atm = ~50 m depth for pressure equivalence training.
506.625 kPa = 5 atm
An engineer converting 10 atm pressure vessel to kPa for international project collaboration.
1013.25 kPa = 10 atm