Kilopascals (kPa) to Pounds per square inch (psi) Conversion
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
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 (kPa) | Pounds per square inch (psi) |
|---|---|
| 0.1 kPa | 0.0145 psi |
| 1 kPa | 0.145 psi |
| 2 kPa | 0.2901 psi |
| 3 kPa | 0.4351 psi |
| 5 kPa | 0.7252 psi |
| 10 kPa | 1.4504 psi |
| 20 kPa | 2.9008 psi |
| 30 kPa | 4.3511 psi |
| 50 kPa | 7.2519 psi |
| 100 kPa | 14.5038 psi |
| 1000 kPa | 145.0377 psi |
Frequently Asked Questions (FAQ)
How many pounds per square inch are in 1 kilopascals?
1 kilopascals (kPa) is exactly 0.145038 pounds per square inch (psi).
How do I convert kilopascals to pounds per square inch?
Multiply the value in kilopascals by 0.145038 to get the result in pounds per square inch. Or use the converter above — type any number and see the result instantly.