Convert pressure units — Pascal, bar, PSI, atm, Torr, mmHg.
| Unit | Name | Value |
|---|---|---|
| Pa | Pascal | 6894.76 |
| kPa | Kilopascal | 6.89476 |
| bar | Bar | 0.0689476 |
| atm | Atmosphere | 0.068045991 |
| Torr | Torr / mmHg | 51.715096 |
| inHg | Inch of Mercury | 2.0360207 |
Formula: Pascal = PSI × 6895
Multiply any psi value by 6895 to get pascal.
Reverse: PSI = Pascal × 0.000145
Common psi values — factor: 1 psi = 6895 Pa
| PSI (psi) | Pascal (Pa) | Context |
|---|---|---|
| 0.1 psi | 689.5 Pa | Very low gauge |
| 1 psi | 6,895 Pa | Low tire |
| 5 psi | 3.447e+04 Pa | Bike inner tube low |
| 10 psi | 6.895e+04 Pa | Low hydraulic |
| 14.7 psi | 101,300 Pa | 1 atm |
| 20 psi | 137,900 Pa | Soft tire |
| 30 psi | 206,800 Pa | Car tire low |
| 35 psi | 241,300 Pa | Car tire normal |
| 60 psi | 413,700 Pa | Truck tire |
| 100 psi | 689,500 Pa | Medium hydraulic |
| 150 psi | 1,034,000 Pa | High hydraulic |
| 1,000 psi | 6,895,000 Pa | Industrial |
| 3,000 psi | 20,680,000 Pa | Scuba cylinder |
| 6,000 psi | 41,370,000 Pa | High-pressure cylinder |
| 1.5e+04 psi | 103,400,000 Pa | Waterjet |
1 psi = 6895 Pa. Memorize for instant estimates.
Use 6895 as a quick mental multiplier.
Multiply result by 0.000145 to recover the original psi value.
Inflates and checks car, truck, and bicycle tires to specified psi pressures.
Specifies refrigerant pressures and system test pressures in psi for US equipment.
Designs hydraulic systems rated in psi for American industrial machinery.
Monitors tank pressure (3,000 psi fill) and reserve pressure on US-spec gauges.
Specifies pipe pressure ratings and test pressures in psi for US plumbing codes.
Checks oil pressure (35–65 psi), coolant pressure, and brake line pressure in psi.
PSI (pounds per square inch) is the primary pressure unit in the United States, UK, and other countries using Imperial measures. It equals the force of one pound-force applied over one square inch of area (6,894.76 Pa).
PSI is used for tire pressure (car: 30–35 psi, truck: 80–120 psi), blood pressure measurement in the US, boiler pressure ratings, and hydraulic system specifications in American engineering.
Interesting fact: The deepest ocean dive by a human (Victor Vescovo, 2019, 10,928 m) would have experienced about 15,900 psi of external pressure on the submersible hull.
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square meter. It was named after Blaise Pascal, the 17th-century French mathematician and physicist who studied fluid pressure. The unit was officially adopted by the International System of Units in 1971.
Pascals are used in meteorology (atmospheric pressure ~101,325 Pa), materials science (Young's modulus in GPa), and fluid mechanics. The pascal is very small — standard atmospheric pressure equals 101,325 Pa.
Interesting fact: Blaise Pascal demonstrated in 1648 that atmospheric pressure decreases with altitude by carrying a barometer up the Puy de Dôme mountain, confirming Torricelli's theory of atmospheric pressure.
Converting psi to pascal is a common task in engineering, medicine, meteorology, and science. Different industries and countries use different pressure units — PSI in the US, bar in Europe, mmHg in medicine, and pascals in physics — making accurate conversion essential for cross-disciplinary work.
Quick reference: 5 psi = 3.447e+04 Pa and 10 psi = 6.895e+04 Pa. For the reverse: 1 Pa = 0.000145 psi. The exact factor is 1 psi = 6895 Pa.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.