Pressure Converter
Pascal
Definition: The pascal (symbol: Pa) is the SI derived unit of pressure. It is defined as one newton per square meter.
History/origin: Named after the French polymath Blaise Pascal, who made important contributions to hydrodynamics and hydrostatics. It was officially adopted in 1971.
Current use: Pascals are used in science and high-end engineering. Because it is a small unit, it is more commonly used as Kilopascals (kPa) or Megapascals (MPa).
PSI
Definition: Pounds per square inch (symbol: PSI or lb/in²) is a unit of pressure based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.
History/origin: Derived from the traditional British imperial system. It became a global standard for pneumatic systems during the industrial revolution.
Current use: PSI is the primary unit for tire pressure, air compressors, and hydraulic systems in the United States and several other countries using customary units.
Pascal to PSI Conversion Table
| Pascal [pa] | PSI [psi] |
|---|---|
| 0.01 pa | 0.00000145 psi |
| 0.1 pa | 0.0000145 psi |
| 1 pa | 0.00014504 psi |
| 2 pa | 0.00029008 psi |
| 3 pa | 0.00043511 psi |
| 5 pa | 0.00072519 psi |
| 10 pa | 0.00145038 psi |
| 20 pa | 0.00290075 psi |
| 50 pa | 0.00725189 psi |
| 100 pa | 0.01450377 psi |
| 1000 pa | 0.14503774 psi |
How to Convert Pascal to PSI
1 pa = 0.00014504 psi
1 psi = 6894.757 pa
Example: convert 15 pa to psi:
15 pa = 15 × 0.00014504 psi = 0.00217557 psi
Did You Know?
- The Pascal is a very small unit. The pressure of a single sheet of paper lying flat on a table is approximately 1 Pascal.
- Did you know? Most passenger car tires are inflated to about 32-35 PSI. In contrast, high-pressure bicycle tires can go up to 100 PSI or more!