Convert Pascals to PSI
Convert Pascals to PSI instantly. 1 Pascal (Pa) equals 0.000145 PSI (psi).
Pascals to PSI conversion table
| Pascals (Pa) | PSI (psi) |
|---|---|
| 1 Pa | 0.000145 psi |
| 2 Pa | 0.0002901 psi |
| 3 Pa | 0.0004351 psi |
| 5 Pa | 0.0007252 psi |
| 10 Pa | 0.00145 psi |
| 20 Pa | 0.002901 psi |
| 50 Pa | 0.007252 psi |
| 100 Pa | 0.0145 psi |
| 500 Pa | 0.07252 psi |
| 1,000 Pa | 0.145 psi |
1 Pascal = 0.000145 PSI · multiply Pascals by 0.000145
About converting Pascals to PSI
Pascals (Pa) and PSI (psi) are both units of pressure, so converting between them is a single multiplication: multiply your Pascals figure by 0.000145. Ten Pascals comes to 0.00145 PSI, and a hundred works out at 0.0145 PSI.
Rule of thumb: going from Pascals to PSI divides, so the figure always shrinks — it takes about 6,894.76 Pascals to make a single PSI. If your answer came out bigger, you have the conversion the wrong way round.
What is a Pascal?
The pascal is the SI unit of pressure: one newton spread over one square metre. It is named after Blaise Pascal, who established that air pressure falls with altitude by having a barometer carried up a mountain. The awkward thing about the unit is its scale — a single pascal is a very small pressure indeed, so honest real-world figures come out enormous, atmospheric pressure alone being about 101,325 of them. That is why hardly anyone works in bare pascals: engineers reach for kilopascals, meteorologists for hectopascals, and industry for the bar.
What is a PSI?
Pounds per square inch is the pressure unit Americans actually meet: on the gauge at the filling-station air pump, on compressors, on hydraulic equipment, and on the sidewall of every tyre sold in the country. It survives in British tyre pressures too, despite nearly everything else there having gone metric. Structurally it is exactly what the name says — a pound-force resting on a square inch — and that heritage is also its weakness, because it inherits the pound-force and with it the old confusion between pounds as weight and pounds as mass.
To put both in perspective: sea-level air pressure is about 101,325 pascals, while a car tyre is usually inflated to about 32 psi.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the PSI to Pascals converter, or browse all Pressure converters.
Frequently asked questions
How many PSI are in one Pascal?
There are 0.000145 PSI in one Pascal.
How do I convert Pascals to PSI?
Multiply the number of Pascals by 0.000145. For example, 10 Pascals = 0.00145 PSI.
What is 100 Pascals in PSI?
100 Pascals is equal to 0.0145 PSI.
How do I convert PSI to Pascals?
Multiply the PSI value by 6,894.76 (or divide by 0.000145).
Is this Pascals to PSI conversion exact?
The definition is exact — Pascals and PSI are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Pascal?
The pascal is the SI unit of pressure: one newton spread over one square metre. It is named after Blaise Pascal, who established that air pressure falls with altitude by having a barometer carried up a mountain. The awkward thing about the unit is its scale — a single pascal is a very small pressure indeed, so honest real-world figures come out enormous, atmospheric pressure alone being about 101,325 of them. That is why hardly anyone works in bare pascals: engineers reach for kilopascals, meteorologists for hectopascals, and industry for the bar.
What is a PSI?
Pounds per square inch is the pressure unit Americans actually meet: on the gauge at the filling-station air pump, on compressors, on hydraulic equipment, and on the sidewall of every tyre sold in the country. It survives in British tyre pressures too, despite nearly everything else there having gone metric. Structurally it is exactly what the name says — a pound-force resting on a square inch — and that heritage is also its weakness, because it inherits the pound-force and with it the old confusion between pounds as weight and pounds as mass.