Convert Pascals to psi
1 pascal (Pa) equals 0.0001450377377 psi.
1 Pa = 0.0001450377377 psi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk pascal to psi converter to paste a column from Excel.
How to Convert Pascal to psi
- 1 Pa = 0.0001450377377 psi
- 1 psi = 6894.757293 Pa
- Example: convert 15 Pa to psi: 15 Pa = 15 × 0.0001450377377 psi = 0.002175566066 psi
Formula
psi = Pa × 0.0001450377377302
or psi = Pa ÷ 6894.757293168
Derivation from SI units:
- 1 Pa = 1 N/m² = 1 kg·m⁻¹·s⁻²
- 1 psi = 1 lbf/in² = (0.45359237 kg × 9.80665 m/s²) ÷ (0.0254 m)² = 6894.757293168 Pa
Both units are defined exactly, so the factor is exact. Pascal definition: pascal; psi definition: psi.
Worked examples
- ASTM D737 measures fabric air permeability at a pressure drop of 125 Pa, which is 0.01812971722 psi.
125 Pa × 0.0001450377377 = 0.01812971722 psi - A pleated HVAC filter that has loaded up to 250 Pa is at 0.03625943443 psi, a tiny fraction of one psi.
250 Pa × 0.0001450377377 = 0.03625943443 psi
Pascal to psi conversion table
| Pascals (Pa) | psi |
|---|---|
| 1 Pa | 0.0001450377377 psi |
| 5 Pa | 0.0007251886887 psi |
| 10 Pa | 0.001450377377 psi |
| 15 Pa | 0.002175566066 psi |
| 25 Pa | 0.003625943443 psi |
| 50 Pa | 0.007251886887 psi |
| 75 Pa | 0.01087783033 psi |
| 100 Pa | 0.01450377377 psi |
| 125 Pa | 0.01812971722 psi |
| 150 Pa | 0.02175566066 psi |
| 200 Pa | 0.02900754755 psi |
| 250 Pa | 0.03625943443 psi |
| 300 Pa | 0.04351132132 psi |
| 400 Pa | 0.05801509509 psi |
| 500 Pa | 0.07251886887 psi |
| 750 Pa | 0.1087783033 psi |
| 1000 Pa | 0.1450377377 psi |
| 1500 Pa | 0.2175566066 psi |
| 2000 Pa | 0.2900754755 psi |
| 2500 Pa | 0.3625943443 psi |
| 5000 Pa | 0.7251886887 psi |
| 10000 Pa | 1.450377377 psi |
| 50000 Pa | 7.251886887 psi |
| 101325 Pa | 14.69594878 psi |
Where it's used
Cleanroom, filter and HVAC data from Europe and Asia are given in pascals, while US gauges and compressed-air specifications use psi. Below a few kilopascals the psi values become very small, which is why US practice switches to inches of water for low differentials.
Pascal to other pressure units
| Conversion | 1 Pa equals |
|---|---|
| pascal to kilopascal | 0.001 kPa |
| pascal to megapascal | 0.000001 MPa |
| pascal to psi | 0.0001450377377 psi |
| pascal to bar | 0.00001 bar |
| pascal to millibar | 0.01 mbar |
| pascal to decibar | 0.0001 dbar |
| pascal to torr | 0.007500616827 Torr |
| pascal to millimeter of mercury | 0.007500615758 mmHg |
| pascal to millimeter of water | 0.1019716213 mmH₂O |
| pascal to centimeter of water | 0.01019716213 cmH₂O |
| pascal to inch of water | 0.00401463076 inH₂O |
| pascal to inch of water (60 °F) | 0.00401864652 inH₂O (60 °F) |
| pascal to inch of mercury | 0.000295299833 inHg |
| pascal to atmosphere | 0.000009869232667 atm |
| pascal to barye | 10 Ba |
Frequently asked questions
Is 1 Pa a lot of pressure?
No. One pascal is only 0.000145 psi, about the pressure a sheet of office paper exerts lying flat on a table. Typical cleanroom differentials are 10–50 Pa.
How many psi are in 1 pascal?
1 Pa = 0.0001450377377 psi.
How do I convert pascals to psi?
Multiply the value in Pa by 0.0001450377377, or divide it by 6894.757293. For example, 15 Pa × 0.0001450377377 = 0.002175566066 psi.
Is the Pa to psi conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent derived units with special names.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound-force per square inch (psi)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Pascals to psi. Retrieved October 17, 2026, from https://scientificconverters.com/pressure/pascal-to-psi/
IEEE
Scientific Converters, "Convert Pascals to psi," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/pressure/pascal-to-psi/