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: Bar = Kilopascal × 0.01
Multiply any kilopascal value by 0.01 to get bar.
Reverse: Kilopascal = Bar × 100
Common kilopascal values — factor: 1 kPa = 0.01 bar
| Kilopascal (kPa) | Bar (bar) | Context |
|---|---|---|
| 0.1 kPa | 0.001 bar | Light wind |
| 1 kPa | 0.01 bar | 10 mbar |
| 10 kPa | 0.1 bar | 100 mbar |
| 100 kPa | 1 bar | 1 bar / ~1 atm |
| 101.3 kPa | 1.013 bar | 1 standard atm |
| 200 kPa | 2 bar | 2 bar / car tire |
| 250 kPa | 2.5 bar | 2.5 bar tire |
| 500 kPa | 5 bar | 5 bar |
| 1,000 kPa | 10 bar | 10 bar |
| 6.895 kPa | 0.06895 bar | 100 mbar |
| 1e+04 kPa | 100 bar | 100 bar |
| 100,000 kPa | 1,000 bar | 1,000 bar |
| 0.1333 kPa | 0.001333 bar | Light wind |
| 3.386 kPa | 0.03386 bar | 1 inHg |
| 98.07 kPa | 0.9807 bar | 1 kgf/cm² |
kPa ÷ 100 = bar. Exact.
Move decimal 2 places left: 250 kPa = 2.5 bar.
bar × 100 = kPa.
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.
The bar is a metric unit of pressure equal to exactly 100,000 pascals — very close to standard atmospheric pressure (1 atm = 1.01325 bar). It was introduced in 1909 and is widely used in Europe for weather forecasting, diving, and industrial applications.
Scuba diving cylinders are filled to 200–300 bar. Automotive tire pressure gauges often display in bar across Europe. Industrial compressors and hydraulic systems are commonly rated in bar.
Interesting fact: The millibar (mbar = hPa) is the standard unit for atmospheric pressure in meteorology worldwide. Standard sea-level atmospheric pressure is 1013.25 mbar.
Converting kilopascal to bar 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 = 0.05 bar and 10 kPa = 0.1 bar. For the reverse: 1 bar = 100 kPa. The exact factor is 1 kPa = 0.01 bar.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.