atm to kPa – convert atmospheres to kilopascals
Convert atmospheres to kilopascals (atm to kPa) to turn sea-level pressure, vacuum levels and gas pressures into standard SI units.
Open the interactive atm → kPa converter:
Use main converter (atm → kPa) or switch to kPa → atmThe pressure converter also supports Pa, kPa, bar, mbar and psi for lab work and engineering.
Quick reference: atm to kPa
One atmosphere is defined as 101.325 kPa. So: kPa = atm × 101.325. Examples:
| Pressure (atm) | Pressure (kPa, approx.) |
|---|---|
| 0.5 atm | 50.66 kPa |
| 1 atm | 101.33 kPa |
| 2 atm | 202.65 kPa |
| 5 atm | 506.63 kPa |
| 10 atm | 1,013.25 kPa |
| 20 atm | 2,026.5 kPa |
Why convert atm to kPa?
atm to kPa is helpful when you:
- Convert chemistry or physics problems from atm into SI pressure units.
- Relate diving pressures or vacuum levels to kPa gauges and sensors.
- Work with datasheets that mix atm, bar, kPa and psi.
- Standardise engineering documents on kilopascals.
Other pressure converters on this site
For quick mental maths, 1 atm ≈ 100 kPa is often close enough, but the converter keeps the exact 101.325 value.
Page last updated: 4 December 2025.