Kilopascals to atmospheres
Multiply kilopascals by 0.00986923 to get atmospheres.
150 kPa = 1.4804 atm
How to convert kilopascals to atmospheres
The atmosphere is the standard atmosphere, exactly 101 325 pascals. The kilopascal is one thousand pascals (10³ Pa), the metric pressure unit.
Worked example — 150 kPa: 150 × 0.00986923 = 1.4804 atm.
Kilopascals to atmospheres table
| Kilopascals | Atmospheres |
|---|---|
| 10 kPa | 0.0986923 atm |
| 50 kPa | 0.493462 atm |
| 100 kPa | 0.986923 atm |
| 101.325 kPa | 1 atm |
| 150 kPa | 1.4804 atm |
| 200 kPa | 1.9738 atm |
| 300 kPa | 2.9608 atm |
| 500 kPa | 4.9346 atm |
| 1,000 kPa | 9.8692 atm |
Reverse and related
About kilopascals and atmospheres
Kilopascal (kPa)
1 kPa = 0.00986923 atmDefinition. One thousand pascals (10³ Pa), the metric pressure unit
History and origin
The kilopascal is one thousand pascals, a metric multiple of the SI pressure unit. It gives conveniently sized numbers for everyday pressures.
Current use
Kilopascals are used for tyre pressure in metric countries and throughout engineering.
Source: NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi)
Atmosphere (atm)
1 atm = 101.325 kPaDefinition. The standard atmosphere, exactly 101 325 pascals
History and origin
The standard atmosphere was defined as a reference pressure of exactly 101 325 pascals, close to average pressure at sea level. It gave a convenient benchmark before the pascal became standard.
Current use
Atmospheres are used in diving, chemistry and when describing pressure at altitude.
Source: NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi)
Where people use this
Kilopascals: tyre pressure (metric), engineering. Atmospheres: diving, chemistry, altitude. 101.325 kPa is exactly 1 atm.
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST SP 811, App. B; ISO 80000-4. Exact SI values are definitional (bar = 10⁵ Pa, atm = 101 325 Pa) or derived from the pound (NIST HB 44) and standard gravity 9.80665 m/s² (psi).
Questions people ask
How many atm is 100 kPa?
100 kPa is about 0.987 atm. To convert kilopascals to atmospheres, divide by 101.325.
How many kPa in an atmosphere?
One atmosphere is exactly 101.325 kPa.
How many atm is 200 kPa?
200 kPa is about 1.97 atm.