One psi is about 6,894.76 Pa. Small pressure differences in ducts, filters and sensors are measured in pascals but sometimes need to be shown in psi.
How to use the Pascals to PSI Converter
- Type the number of pascals into the Pascals field. Decimals such as 3,447.38 are fine.
- Read the answer in Psi. It updates as you type, with no button to press. The same amount is also shown in kPa, inH₂O, mbar.
- To go from psi back to pascals, type into the Psi field instead. Every field also has a unit menu with all 18 pressure units, for example kPa, MPa, GPa, hPa, bar, mbar, atm, ksi, psf, mmHg, Torr.
Results update as you type, and everything is calculated in your browser.
How it works
Both units measure pressure, so they are always in the same ratio: one pascal equals 0.00014503774 psi. The calculator multiplies the number of pascals you type by 0.00014503774 to give psi, and when you type into the psi field it divides by the same factor to give pascals. Because the ratio never changes, doubling the pascals always doubles the psi, for example 13,789.52 Pa is 2.0000008 psi.
How to convert pascals to psi
- Write down the value in pascals, for example 6,894.76 Pa.
- Multiply by the conversion factor 0.00014503774 (because 1 pascal = 0.00014503774 psi).
- 6,894.76 × 0.00014503774 = 1.0000004 psi.
- To go back from psi to pascals, divide by 0.00014503774, or multiply by 6,894.7573.
Pa to psi conversion table
| Pascals | Psi | Psi | Pascals |
|---|---|---|---|
| 1 Pa | 0.00014503774 psi | 1 psi | 6,894.7573 Pa |
| 10 Pa | 0.0014503774 psi | 2 psi | 13,789.515 Pa |
| 100 Pa | 0.014503774 psi | 5 psi | 34,473.786 Pa |
| 1,000 Pa | 0.14503774 psi | 10 psi | 68,947.573 Pa |
| 6,894.76 Pa | 1.0000004 psi | 20 psi | 137,895.15 Pa |
| 10,000 Pa | 1.4503774 psi | 50 psi | 344,737.86 Pa |
| 100,000 Pa | 14.503774 psi | 100 psi | 689,475.73 Pa |
| 1,000,000 Pa | 145.03774 psi | 1,000 psi | 6,894,757.3 Pa |
Pressure units explained
- Pascal (Pa)
- The pascal is the SI unit of pressure: one newton per square metre. It is small, so kilopascals and megapascals are used in practice.
- Pound per square inch (psi)
- Pounds per square inch is the pressure of one pound-force on one square inch, about 6,895 Pa. U.S. tyre gauges, compressors and hydraulic equipment read psi.
Quick mental conversion
For a fast estimate, multiply pascals by about 0.00015 to get psi; the error is about 3.4%. Use the calculator above when you need the exact figure.
Formula
1 Pa = 0.00014503774 psi
1 pound per square inch = 6,894.7573 Pa
psi = Pa × 0.00014503774
Worked example
Inputs: Pascals: 6,894.76 Pa.
Results: Psi = 1.00000039 psi; Kilopascals = 6.89476 kPa; Inches of water = 27.67991558 inH₂O; Millibars = 68.9476 mbar.
Frequently asked questions
How many Pa in a psi?
About 6,894.76 Pa.
How many psi is 100,000 Pa?
About 14.5 psi.
How do I convert pascals to psi?
Multiply the number of pascals by 0.00014503774. For example, 6,894.76 Pa × 0.00014503774 = 1.0000004 psi.
How do I convert psi back to pascals?
Divide by 0.00014503774 (or multiply by 6,894.7573), or simply type the value into the psi field above.
What is 10 Pa in psi?
10 Pa = 0.0014503774 psi.
What is 100 Pa in psi?
100 Pa = 0.014503774 psi.
Is the pascals to psi conversion exact?
Yes. The official definitions (NIST and the SI) fix 1 pound per square inch = 6,894.7573 Pa exactly, so the only difference you may see is rounding in the last displayed digit.