Pascals to PSI Converter (Pa to psi)
Convert pressure between pascal (Pa) and pounds per square inch (psi) in one step. This professional tool also supports kPa, MPa, bar and atm, with precise formulas and engineering-grade rounding.
Pa ⇄ psi pressure converter
Supports decimals and scientific notation (e.g. 1e5).
Result
Enter a value to start the conversion.
Using: psi = Pa ÷ 6894.757 and Pa = psi × 6894.757
Quick facts: 1 Pa ≈ 0.000145038 psi
1 psi ≈ 6,894.757 Pa
How the Pa to psi conversion works
Pascals (Pa) are the SI unit of pressure, defined as one newton per square meter. Pounds per square inch (psi) are commonly used in the US and UK for tire pressure, hydraulics, compressed air and many industrial systems.
Exact conversion factors
Base relationship
1 psi = 6,894.757 Pa
1 Pa ≈ 0.0001450377 psi
From pascals to psi
\( \text{psi} = \dfrac{\text{Pa}}{6894.757} \)
From psi to pascals
\( \text{Pa} = \text{psi} \times 6894.757 \)
Supported pressure units
- Pa – pascals (base SI unit)
- kPa – kilopascals, 1 kPa = 1,000 Pa
- MPa – megapascals, 1 MPa = 1,000,000 Pa
- bar – convenient engineering unit, 1 bar = 100,000 Pa ≈ 14.5038 psi
- atm – standard atmosphere, 1 atm = 101,325 Pa ≈ 14.6959 psi
- psi – pounds per square inch
Worked examples
Example 1 – 1 bar to psi
1 bar = 100,000 Pa.
Using psi = Pa ÷ 6894.757:
\( \text{psi} = \dfrac{100000}{6894.757} \approx 14.5038 \text{ psi} \)
Example 2 – 30 psi to Pa
Using Pa = psi × 6894.757:
\( \text{Pa} = 30 \times 6894.757 \approx 206{,}843 \text{ Pa} \)
Reference table: Pa to psi
| Pascals (Pa) | PSI (approx.) |
|---|---|
| 1 Pa | 0.0001450 psi |
| 5 Pa | 0.000725 psi |
| 10 Pa | 0.001450 psi |
| 100 Pa | 0.0145038 psi |
| 1,000 Pa | 0.145038 psi |
| 100,000 Pa | 14.5038 psi |
Reference table: psi to Pa
| PSI | Pascals (approx.) |
|---|---|
| 1 psi | 6,894.76 Pa |
| 5 psi | 34,473.8 Pa |
| 10 psi | 68,947.6 Pa |
| 50 psi | 344,738 Pa |
| 100 psi | 689,476 Pa |
Gauge vs absolute pressure
The converter itself is purely mathematical: it assumes a straightforward unit conversion. In practice, you should distinguish between:
- Gauge pressure (psig, barg) – measured relative to ambient atmospheric pressure.
- Absolute pressure (psia, bara) – measured relative to perfect vacuum.
As long as you are consistent (both values gauge or both absolute), the numerical conversion between Pa and psi is the same. What changes is the reference point, not the factor.
FAQ – Pa to psi conversions
How do you convert pascals (Pa) to PSI?
Divide the pressure in pascals by 6,894.757. The formula is:
psi = Pa ÷ 6894.757.
How do you convert PSI to pascals (Pa)?
Multiply the pressure in PSI by 6,894.757. The formula is:
Pa = psi × 6894.757.
What is the difference between Pa, kPa, bar, and PSI?
Pa, kPa and MPa are SI-based pressure units, bar is a convenient engineering unit, and PSI is a non-SI unit based on pounds of force per square inch of area. They all measure the same physical quantity but on different scales.
Is this tool suitable for engineering work?
Yes. This calculator is designed for engineers, HVAC specialists, lab technicians and students who need accurate, reproducible unit conversions and clear documentation of the formulas used.