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: Kilopascal = PSI × 6.895
Multiply any psi value by 6.895 to get kilopascal.
Reverse: PSI = Kilopascal × 0.145
Common psi values — factor: 1 psi = 6.895 kPa
| PSI (psi) | Kilopascal (kPa) | Context |
|---|---|---|
| 0.1 psi | 0.6895 kPa | Very low gauge |
| 1 psi | 6.895 kPa | Low tire |
| 5 psi | 34.47 kPa | Bike inner tube low |
| 10 psi | 68.95 kPa | Low hydraulic |
| 14.7 psi | 101.3 kPa | 1 atm |
| 20 psi | 137.9 kPa | Soft tire |
| 30 psi | 206.8 kPa | Car tire low |
| 35 psi | 241.3 kPa | Car tire normal |
| 60 psi | 413.7 kPa | Truck tire |
| 100 psi | 689.5 kPa | Medium hydraulic |
| 150 psi | 1,034 kPa | High hydraulic |
| 1,000 psi | 6,895 kPa | Industrial |
| 3,000 psi | 2.068e+04 kPa | Scuba cylinder |
| 6,000 psi | 4.137e+04 kPa | High-pressure cylinder |
| 1.5e+04 psi | 103,400 kPa | Waterjet |
PSI × 6.895 = kPa. Round to × 6.9.
Multiply psi by 6.9 for quick kPa estimates.
14.696 psi = 101.325 kPa = 1 atm.
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 kilopascal (kPa) equals 1,000 pascals and is the practical everyday pressure unit in metric countries. It is the standard unit for tire pressure, blood pressure, and weather maps in countries using SI.
Blood pressure in many countries is expressed in kPa (normal: ~16/10.7 kPa), though mmHg remains dominant in medicine. Car tire pressure is typically 200–250 kPa. Weather maps use hPa (= mbar) for atmospheric pressure.
Interesting fact: The 'bends' (decompression sickness) in scuba diving occurs when dissolved nitrogen forms bubbles as pressure drops — a drop of just a few kPa too quickly can be fatal.
Converting psi to kilopascal 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 = 34.47 kPa and 10 psi = 68.95 kPa. For the reverse: 1 kPa = 0.145 psi. The exact factor is 1 psi = 6.895 kPa.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.