How to convert kilopascals to pounds per square inch
Apply the documented kilopascals-to-pounds per square inch relationship below, keeping the full stored constant until the displayed result is rounded.
Kilopascals × 0.1450377377 = Pounds per Square Inch
For example, 10 kPa equals 1.45037738 psi.
Kilopascals to Pounds per Square Inch reference table
| Kilopascals | Pounds per Square Inch |
|---|---|
| 1 kPa | 0.14503774 psi |
| 5 kPa | 0.72518869 psi |
| 10 kPa | 1.45037738 psi |
| 25 kPa | 3.62594344 psi |
| 50 kPa | 7.25188689 psi |
| 100 kPa | 14.50377377 psi |
Method and quality checks
- Calculation
- Kilopascals × 0.1450377377 = Pounds per Square Inch. The calculator keeps the stored factor through the operation and rounds only the displayed result to the selected or page-supported precision.
- Unit convention
- This page changes pressure units, not the reference basis. Gauge pressure and absolute pressure must be identified before conversion.
- Input validation
- Finite numeric inputs are accepted. Results outside the supported numeric range are rejected instead of being displayed as valid measurements.
- Reasonableness check
- 10 kPa produces 1.45037738 psi. Check the direction and approximate scale before relying on a more precise displayed value.
Deeper method: Gauge and absolute pressure.
Kilopascals and psi in specifications
A kilopascal is exactly 1,000 pascals, while one pound per square inch is approximately 6,894.757293 pascals. This makes 1 kPa approximately 0.1450377377 psi.
- Keep the pressure basis—gauge or absolute—the same on both sides of the conversion.
- Use the manufacturer's stated range when checking tires, tools, or pressure vessels.
- Do not infer equipment suitability from a converted number alone.
Reference: NIST pressure conversion factors.