Kilopascals (kPa) to Atmospheres (atm) Conversion
Kilopascals
The kilopascal (kPa) is a unit of pressure equal to exactly 1,000 pascals and is one of the most practical pressure units for everyday engineering. Standard atmospheric pressure is approximately 101.3 kPa. Tyre pressure is commonly specified in kPa in metric countries: a typical car tyre is inflated to 220–250 kPa. Blood pressure in clinical settings is measured in mmHg, but some medical devices express it in kPa (normal systolic ≈ 16 kPa).
Atmospheres
The standard atmosphere (atm) is a unit of pressure defined as exactly 101,325 Pa, representing the approximate mean atmospheric pressure at sea level. It remains in use in chemistry for expressing gas pressures in thermodynamic tables and standard conditions (STP: 0 °C and 1 atm). One atmosphere supports a mercury column of exactly 760 mm — the basis of the mercury barometer invented by Torricelli in 1643. In deep-sea diving, pressure is expressed in atmospheres absolute (ATA).
| Kilopascals (kPa) | Atmospheres (atm) |
|---|---|
| 0.1 kPa | 0.000987 atm |
| 1 kPa | 0.00987 atm |
| 2 kPa | 0.0197 atm |
| 3 kPa | 0.0296 atm |
| 5 kPa | 0.0493 atm |
| 10 kPa | 0.0987 atm |
| 20 kPa | 0.1974 atm |
| 30 kPa | 0.2961 atm |
| 50 kPa | 0.4935 atm |
| 100 kPa | 0.9869 atm |
| 1000 kPa | 9.8692 atm |
Frequently Asked Questions (FAQ)
How many atmospheres are in 1 kilopascals?
1 kilopascals (kPa) is exactly 0.009869 atmospheres (atm).
How do I convert kilopascals to atmospheres?
Multiply the value in kilopascals by 0.009869 to get the result in atmospheres. Or use the converter above — type any number and see the result instantly.