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 | 0.6895 kPa |
| 1 psi | 6.8948 kPa |
| 2 psi | 13.7895 kPa |
| 3 psi | 20.6843 kPa |
| 5 psi | 34.4738 kPa |
| 10 psi | 68.9476 kPa |
| 20 psi | 137.8951 kPa |
| 30 psi | 206.8427 kPa |
| 50 psi | 344.7379 kPa |
| 100 psi | 689.4757 kPa |
| 1000 psi | 6,894.7573 kPa |
Frequently Asked Questions (FAQ)
How many kilopascals are in 1 pounds per square inch?
1 pounds per square inch (psi) is exactly 6.8948 kilopascals (kPa).
How do I convert pounds per square inch to kilopascals?
Multiply the value in pounds per square inch by 6.8948 to get the result in kilopascals. Or use the converter above — type any number and see the result instantly.