UnitConPressure
Pressure is force applied over a unit of area. The SI unit is the pascal, though practical pressure measurements often use kPa, bar, PSI, atmospheres, or torr depending on the industry. Pressure conversion is common in tire inflation, weather reporting, vacuum systems, industrial equipment, and laboratory work. This converter helps users move between those systems quickly and accurately.
Common conversions
| From | To |
|---|---|
| 1 Atmosphere | 14.69595 Pound per Square Inch |
| 1 Bar | 14.50377 Pound per Square Inch |
| 1 Pound per Square Inch | 6.894757 Kilopascal |
| 30 Pound per Square Inch | 2.068427 Bar |
| 1 Millimeter of Mercury | 133.3224 Pascal |
| 100 Kilopascal | 14.50377 Pound per Square Inch |
| 2 Bar | 200 Kilopascal |
Frequently asked questions
One bar equals about 14.5038 PSI. That conversion is commonly used for tire pressure and compressed air systems.
Standard atmospheric pressure is about 14.696 PSI. It is also defined as 101,325 pascals or 1 atmosphere.
Many passenger cars run around 30 to 35 PSI, which is roughly 2.1 to 2.4 bar. Always follow the vehicle manufacturer's recommended pressure, not a generic number.
Bar is a metric-related pressure unit, while PSI means pounds per square inch and is a customary unit. Both describe the same physical quantity using different scales.
A pascal is one newton of force applied over one square meter. It is the SI unit of pressure and the base for larger units like kPa and MPa.