How to convert atmospheres to kilopascals
Apply the documented atmospheres-to-kilopascals relationship below, keeping the full stored constant until the displayed result is rounded.
Atmospheres × 101.325 = Kilopascals
For example, 10 atm equals 1,013.25 kPa.
Atmospheres to Kilopascals reference table
| Atmospheres | Kilopascals |
|---|---|
| 1 atm | 101.325 kPa |
| 5 atm | 506.625 kPa |
| 10 atm | 1,013.25 kPa |
| 25 atm | 2,533.125 kPa |
| 50 atm | 5,066.25 kPa |
| 100 atm | 10,132.5 kPa |
Method and quality checks
- Calculation
- Atmospheres × 101.325 = Kilopascals. The calculator keeps the stored factor through the operation and rounds only the displayed result to the selected or page-supported precision.
- Unit convention
- This page changes pressure units, not the reference basis. Gauge pressure and absolute pressure must be identified before conversion.
- Input validation
- Finite numeric inputs are accepted. Results outside the supported numeric range are rejected instead of being displayed as valid measurements.
- Reasonableness check
- 10 atm produces 1,013.25 kPa. Check the direction and approximate scale before relying on a more precise displayed value.
Deeper method: Gauge and absolute pressure.
The standard atmosphere is an exact reference pressure
This converter uses the standard atmosphere, defined as exactly 101,325 pascals or 101.325 kilopascals. It is a reference unit and should not be mistaken for the changing local air pressure at a particular place and time.
- Distinguish the standard atmosphere from an observed weather-station pressure.
- State whether a technical value is absolute pressure or pressure relative to ambient conditions.
- Use calibrated instruments and required standards for laboratory or safety-critical work.
Reference: NIST pressure conversion factors.