About this converter
Pressure measures force distributed over an area. Pascal (Pa) is the SI pressure unit, 1 bar equals exactly 100,000 Pa, and 1 psi equals about 6,894.76 Pa.
This converter supports metric, imperial, atmospheric, vacuum, and lab pressure units. HVAC technicians, hydraulic engineers, tire technicians, process operators, lab staff, and physics students use pressure conversions when comparing gauges, sensors, pump ratings, vacuum readings, and weather data.
How to Use This Converter
- Enter the pressure value.
- Select the source unit from the From menu.
- Select the target unit from the To menu.
- Read the converted result and formula line.
- Use Swap to reverse the selected units.
Units Covered
| Unit | Symbol | Common Use |
|---|---|---|
| Pascal | Pa | SI pressure calculations, sensors, and engineering equations. |
| Bar | bar | Hydraulics, compressors, process equipment, and tire pressure. |
| Atmosphere | atm | Gas laws, lab work, and atmospheric reference pressure. |
| Pound per square inch | psi | US tire pressure, hydraulics, pneumatics, and gauges. |
| Torr | torr | Vacuum systems, lab pressure, and gas measurements. |
| Kilopascal | kPa | HVAC, weather, medical, and engineering pressure readings. |
| Megapascal | MPa | High-pressure hydraulics, materials, and structural calculations. |
| Millibar | mbar | Weather reports, vacuum work, and meteorology. |
| Kilogram-force per square centimeter | kgf/cm² | Older mechanical, pump, and pressure equipment specs. |
| Inch of mercury | inHg | Barometric pressure, vacuum gauges, and aviation altimeters. |
PSI to kPa Conversion Table
| From | To |
|---|---|
| 1 psi | 6.89476 kPa |
| 5 psi | 34.4738 kPa |
| 10 psi | 68.9476 kPa |
| 15 psi | 103.421 kPa |
| 20 psi | 137.895 kPa |
| 30 psi | 206.843 kPa |
| 40 psi | 275.79 kPa |
| 50 psi | 344.738 kPa |
| 75 psi | 517.107 kPa |
| 100 psi | 689.476 kPa |
| 150 psi | 1,034.21 kPa |
| 300 psi | 2,068.43 kPa |
How to Convert PSI to kPa
PSI to kilopascals
For example, 32 psi x 6.89476 = 220.632 kPa.
Kilopascals to PSI
For example, 250 kPa / 6.89476 = 36.2594 psi.
When You Need to Convert Pressure
Vehicle and bicycle tire labels often use psi, while many international manuals use kPa or bar. A 35 psi tire pressure equals 241.317 kPa or 2.413 bar, which helps technicians set gauges correctly.
HVAC and refrigeration work mixes psi, kPa, bar, and sometimes inches of mercury for vacuum checks. Converting those units keeps compressor readings, service charts, and sensor outputs comparable.
Laboratories and process plants may report vacuum in torr or mbar while control systems use pascals. A pressure of 10 torr equals about 1,333.22 Pa, which is useful when setting vacuum thresholds.