Convert pressure units — Pascal, bar, PSI, atm, Torr, mmHg.
| Unit | Name | Value |
|---|---|---|
| Pa | Pascal | 1000 |
| bar | Bar | 0.01 |
| atm | Atmosphere | 0.0098692327 |
| psi | PSI | 0.14503768 |
| Torr | Torr / mmHg | 7.5006376 |
| inHg | Inch of Mercury | 0.29529971 |
Formula: PSI = Kilopascal × 0.145
Multiply any kilopascal value by 0.145 to get psi.
Reverse: Kilopascal = PSI × 6.895
Common kilopascal values — factor: 1 kPa = 0.145 psi
| Kilopascal (kPa) | PSI (psi) | Context |
|---|---|---|
| 0.1 kPa | 0.0145 psi | Light wind |
| 1 kPa | 0.145 psi | 10 mbar |
| 10 kPa | 1.45 psi | 100 mbar |
| 100 kPa | 14.5 psi | 1 bar / ~1 atm |
| 101.3 kPa | 14.7 psi | 1 standard atm |
| 200 kPa | 29.01 psi | 2 bar / car tire |
| 250 kPa | 36.26 psi | 2.5 bar tire |
| 500 kPa | 72.52 psi | 5 bar |
| 1,000 kPa | 145 psi | 10 bar |
| 6.895 kPa | 1 psi | 100 mbar |
| 1e+04 kPa | 1,450 psi | 100 bar |
| 100,000 kPa | 1.45e+04 psi | 1,000 bar |
| 0.1333 kPa | 0.01934 psi | Light wind |
| 3.386 kPa | 0.4911 psi | 1 inHg |
| 98.07 kPa | 14.22 psi | 1 kgf/cm² |
kPa ÷ 6.895 = psi. Round to ÷ 6.9.
Every 100 kPa ≈ 14.5 psi.
101.325 kPa = 1 atm = 14.696 psi.
Specifies tire pressures in kPa on metric-market vehicle tire placards.
Reports blood pressure alongside mmHg in kPa in metric healthcare systems.
Calculates oxygen partial pressure and altitude effects using kPa.
Specifies duct static pressure, fan performance, and filter resistance in Pa/kPa.
Controls vacuum packaging and autoclave sterilization pressures in kPa.
Measures soil pore water pressure and groundwater head in kPa.
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.
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.
Converting kilopascal to psi 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 kPa = 0.7252 psi and 10 kPa = 1.45 psi. For the reverse: 1 psi = 6.895 kPa. The exact factor is 1 kPa = 0.145 psi.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.