ToolsMedium2025-10-02
How to Easily Convert Pressure Units - PSI, Bar, kPa Conversion
Learn how to easily convert between various pressure units such as PSI, Bar, kPa, and atm, with handy calculators.
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Pressure units come up frequently when dealing with tire pressure, gas pressure, hydraulics, and more. Since different countries and industries use different units, conversion is often necessary.
Common Pressure Units
- PSI (Pounds per Square Inch): US unit, used for tire pressure
- Bar: European standard, 1 bar = 100 kPa
- kPa (Kilopascal): International standard unit
- atm (Atmosphere): Based on atmospheric pressure, 1 atm = 101.325 kPa
- mmHg (Millimeters of Mercury): Used in medicine and meteorology
- MPa (Megapascal): Used for high-pressure measurements
Quick Conversion Formulas
1 PSI = 0.0689 Bar = 6.895 kPa
1 Bar = 14.5 PSI = 100 kPa
1 kPa = 0.145 PSI = 0.01 Bar
1 atm = 14.7 PSI = 1.013 Bar = 101.325 kPa
Examples:
- Tire pressure 32 PSI = 2.2 Bar = 220 kPa
- 2.5 Bar = 36 PSI = 250 kPa
Online Calculators
1. Google Search:
- Type "32 psi to bar" for an instant conversion
- Google calculator launches automatically
2. Dedicated Sites:
- unitconverters.net
- convertunits.com
- Naver Unit Converter
3. Mobile Apps:
- Unit Converter (Android/iOS)
- ConvertPad
Everyday Applications
Tire Pressure:
- Standard passenger car: 30-35 PSI (2.0-2.4 Bar)
- SUV: 35-40 PSI (2.4-2.8 Bar)
- Winter: 2-3 PSI above recommended pressure
Water Pressure:
- Residential water supply: 2-4 Bar (30-60 PSI)
- Ideal shower pressure: 1.5-2.5 Bar
Additional Tips
- It is recommended to check tire pressure at least once a month
- Pressure should be measured when tires are cold for accurate readings
- Installing a unit conversion app on your phone is very convenient
- Always check the unit displayed on the pressure gauge at a garage or gas station
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