Pounds per square inch (psi) to Pascals (Pa) Conversion
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
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 (psi) | Pascals (Pa) |
|---|---|
| 0.1 psi | 689.4757 Pa |
| 1 psi | 6,894.7573 Pa |
| 2 psi | 13,789.5146 Pa |
| 3 psi | 20,684.2719 Pa |
| 5 psi | 34,473.7865 Pa |
| 10 psi | 68,947.5729 Pa |
| 20 psi | 137,895.1459 Pa |
| 30 psi | 206,842.7188 Pa |
| 50 psi | 344,737.8647 Pa |
| 100 psi | 689,475.7293 Pa |
| 1000 psi | 6,894,757.2932 Pa |
Frequently Asked Questions (FAQ)
How many pascals are in 1 pounds per square inch?
1 pounds per square inch (psi) is exactly 6,894.76 pascals (Pa).
How do I convert pounds per square inch to pascals?
Multiply the value in pounds per square inch by 6,894.76 to get the result in pascals. Or use the converter above — type any number and see the result instantly.