Convert PSI to Pascals
PSI to pascals is the conversion you need when a pressure reading is in the everyday US unit — pounds per square inch, the number on a tire gauge or an air compressor — but the metric world wants pascals. One psi is approximately 6894.757293168361 Pa, so the pascal figure always comes out much larger.
Pounds per square inch to Pascals conversion table
| Pounds per square inch (psi) | Pascals (Pa) |
|---|---|
| 1 | 6,894.757293 |
| 2 | 13,789.514586 |
| 3 | 20,684.27188 |
| 5 | 34,473.786466 |
| 10 | 68,947.572932 |
| 20 | 137,895.145863 |
| 50 | 344,737.864658 |
| 100 | 689,475.729317 |
| 500 | 3,447,378.646584 |
| 1,000 | 6,894,757.293168 |
The formula
To convert psi to pascals, multiply the pressure in psi by 6894.757293168361:
pascals = psi × 6894.757293168361
A worked example
Say you have a car tire at 32 psi and want it in pascals:
32 × 6894.757293168361 = 220,632.23 Pa
So a tire at 32 psi is about 220,632 pascals.
Why it's an approximation
Psi (pounds per square inch) is a US imperial unit, built from the pound and the inch. The pascal is metric, built from the newton and the meter. The two systems don't divide evenly, so converting between them lands on a long, non-terminating number — 6894.757293168361 is that value rounded off. It's carried to enough decimals for any everyday job, but it stays an approximation rather than a clean, exact figure.
When you'll use it
Reading a US tire, compressor, or water-pressure gauge in psi and needing the metric pascal for a physics problem, an engineering spec, or a datasheet written in SI units.
Frequently asked questions
How many pascals are in one psi?
About 6894.757293168361 pascals. It's a rounded figure — psi is an imperial unit that doesn't line up evenly with the pascal, so this factor is carried to enough decimals to be practical but is not exact.
How many pascals is a typical car tire?
A car tire at about 32 psi works out to roughly 220,632.23 Pa. That's why big pressures are usually written in kilopascals or bar instead — the pascal is a tiny unit, so tire pressures run into the hundreds of thousands.
Is the psi to pascals conversion exact?
No. Psi is a US imperial unit, and its conversion to the metric pascal is a long, non-terminating number. The factor 6894.757293168361 is rounded — more decimal places give more precision if you need it.