Pascals (Pa) to Pounds per square inch (psi) Conversion
Pascals
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square metre (N/m²), named after French mathematician Blaise Pascal who studied fluid pressure in the 17th century. Standard atmospheric pressure at sea level is 101,325 Pa (101.3 kPa). The pascal is a small unit for everyday use — a gentle breeze exerts approximately 1 Pa of dynamic pressure — so kilopascals (kPa) and megapascals (MPa) are more common in practical engineering contexts.
Pounds per square inch
Pounds per square inch (psi) is a unit of pressure defined as one pound-force per square inch (approximately 6,894.76 Pa). It is the standard for tyre pressure, hydraulic systems, and gas cylinders in the United States. Standard atmospheric pressure is approximately 14.696 psi. In engineering, gauge pressure (psig — relative to atmosphere) is distinguished from absolute pressure (psia — relative to a perfect vacuum), a distinction critical in thermodynamics and fluid system design.
| Pascals (Pa) | Pounds per square inch (psi) |
|---|---|
| 0.1 Pa | 0.0000145 psi |
| 1 Pa | 0.000145 psi |
| 2 Pa | 0.00029 psi |
| 3 Pa | 0.000435 psi |
| 5 Pa | 0.000725 psi |
| 10 Pa | 0.00145 psi |
| 20 Pa | 0.0029 psi |
| 30 Pa | 0.00435 psi |
| 50 Pa | 0.00725 psi |
| 100 Pa | 0.0145 psi |
| 1000 Pa | 0.145 psi |
Frequently Asked Questions (FAQ)
How many pounds per square inch are in 1 pascals?
1 pascals (Pa) is exactly 0.000145 pounds per square inch (psi).
How do I convert pascals to pounds per square inch?
Multiply the value in pascals by 0.000145 to get the result in pounds per square inch. Or use the converter above — type any number and see the result instantly.