Table of Contents
Pressure Units Symbols and Unit Conversion
- Pressure units vary globally, with Pascal (Pa), Kilopascal (kPa), and Megapascal (MPa) being standard in scientific and engineering fields worldwide.
- The Bar (bar) is preferred in Europe for industrial and meteorological uses.
- In the United States and the United Kingdom, Pound per Square Inch (psi) is widely used in engineering.
- Kilogram per Square Centimetre (kg/cm²) is common in Asia for engineering and industrial applications.
- Lastly, Inch of Mercury (inHg) is used primarily in the U.S. for meteorology and aviation.
| Pressure Unit | Symbol | Conversion to 1 Unit | Conversion to Other Units |
| Pascal (Pascal) | Pa | 1 Pa | 1 Pa = 0.01 mbar = 0.00001 bar |
| Bar (bar) | bar | 100,000 Pa | 1 bar = 100 kPa = 0.1 MPa |
| Kilopascal (kilopascal) | kPa | 1,000 Pa | 1 kPa = 0.01 bar = 0.145 psi |
| Megapascal (megapascal) | MPa | 1,000,000 Pa | 1 MPa = 10 bar = 145.038 psi |
| Pound per Square Inch (pound/in²) | psi | 6,894.76 Pa | 1 psi = 0.06895 bar = 0.006895 MPa |
| Kilogram per Square Centimetre (kg/cm²) | kg/cm² | 98,066.5 Pa | 1 kg/cm² = 0.98 bar = 14.223 psi |
| Inch of Mercury Column (inch Hg) | inHg | 3,386.39 Pa | 1 inHg = 0.03386 bar = 0.491 psi |
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