PSI to Bar Converter
Pneumatic and hydraulic pressure conversion.
How to convert PSI to Bar?
PSI (Pounds per Square Inch) is the imperial unit of pressure, while the Bar is a metric unit frequently used in industrial pneumatics and hydraulics. One bar is approximately equal to the atmospheric pressure on Earth at sea level.
1 Bar = 14.5038 PSI
1 PSI = 0.0689476 Bar
Standard Pressure Table
| PSI | Bar (Rounded) | Common Application |
|---|---|---|
| 14.5 PSI | 1.0 Bar | Sea Level Atmospheric Pressure |
| 32.0 PSI | 2.2 Bar | Average Car Tire Pressure |
| 90.0 PSI | 6.2 Bar | Standard Pneumatic Tool Supply |
| 100 PSI | 6.9 Bar | Industrial Air Compressors |
| 3000 PSI | 206.8 Bar | High Pressure Hydraulic Systems |
Pressure Units in Industry
Understanding these units is crucial for safety and equipment performance:
- Air Compressors: Most industrial compressors in the US are rated in PSI, but international components often specify maximum pressure in Bar.
- Hydraulic Systems: Heavy machinery uses Bar to define operating pressure for cylinders and pumps to ensure seal integrity.
- Pressure Gauges: Many professional gauges feature dual scales (PSI and Bar) to avoid manual calculation errors in the field.
FAQ: Pressure Conversion
Is 1 Bar equal to 1 Atmosphere?
Technically, no. 1 standard atmosphere (atm) is 1.01325 bar. However, in many industrial contexts, they are treated as roughly equivalent for quick estimations.
Why is 14.5 PSI the magic number?
Because the conversion factor is exactly 14.50377377 PSI per Bar. Using 14.5 is a common industry shortcut for mental math.