Pounds per square inch (psi) to Kilopascals (kPa) 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.
Kilopascals
The kilopascal (kPa) is a unit of pressure equal to exactly 1,000 pascals and is one of the most practical pressure units for everyday engineering. Standard atmospheric pressure is approximately 101.3 kPa. Tyre pressure is commonly specified in kPa in metric countries: a typical car tyre is inflated to 220–250 kPa. Blood pressure in clinical settings is measured in mmHg, but some medical devices express it in kPa (normal systolic ≈ 16 kPa).
| Pounds per square inch (psi) | Kilopascals (kPa) |
|---|---|
| 0.1 psi | 0.6894757293168 kPa |
| 1 psi | 6.894757293168 kPa |
| 2 psi | 13.789514586336 kPa |
| 3 psi | 20.684271879504 kPa |
| 5 psi | 34.47378646584 kPa |
| 10 psi | 68.94757293168 kPa |
| 20 psi | 137.89514586336 kPa |
| 30 psi | 206.84271879504 kPa |
| 50 psi | 344.7378646584 kPa |
| 100 psi | 689.4757293168 kPa |
| 1000 psi | 6894.757293168 kPa |