MPa to Atmospheres Pressure Converter
Convert Megapascals to Standard Atmospheres with safety context indicators. Includes application reference data for hydraulic and pneumatic systems.
About
High-pressure systems, from SCUBA tanks to industrial hydraulics, require precise monitoring. While science uses Pascal (Pa) or Megapascal (MPa), many safety gauges and older equipment rely on Standard Atmospheres (atm). An error in conversion here can lead to catastrophic equipment failure.
This tool converts PMPa to Patm using the standard constant. It features a specific "Safety Context" check, identifying typical real-world applications for the input pressure range to help validate your numbers.
pressure conversion
MPa
atm
hydraulics
diving
Formulas
The standard atmosphere is defined as exactly 101,325 Pascals. Therefore:
Patm = PMPa × 1,000,000101,325 ≈ PMPa × 9.86923
Reference Data
| Application | Pressure (MPa) | Pressure (atm) | Risk Level |
|---|---|---|---|
| Car Tire | 0.2 - 0.3 | 2 - 3 | Low |
| Espresso Machine | 0.9 | 9 | Low |
| SCUBA Tank (Alum 80) | 20.7 | 204 | High |
| CNG Storage | 20 - 25 | 200 - 250 | High |
| Water Jet Cutter | 300 - 400 | 3000 - 4000 | Extreme |
| Marianas Trench Bottom | 108.6 | 1071 | Extreme |
Frequently Asked Questions
They are very close but not identical. 1 bar is exactly 100,000 Pa, while 1 atm is 101,325 Pa. Thus, 1 atm ≈ 1.01325 bar. In rough estimations, they are often treated as equal, but for high-pressure engineering, the difference matters.
Yes. 1 Megapascal (MPa) is mathematically equivalent to 1 Newton per square millimeter (N/mm²). This is why material strength is often listed in MPa.
Technical atmosphere (at) is based on 1 kgf/cm², which is roughly 0.9678 standard atmospheres (atm). This tool uses the standard physical atmosphere (atm).
Anything above 0.5 MPa (5 atm) in a compressed gas system is considered hazardous. Hydraulic injection injuries can occur at pressures as low as 7 MPa (1000 psi).