PSI to Bar
Convert between PSI and bar pressure units instantly.
Enter a pressure in PSI to convert it to bar.
1 PSI equals approximately 0.0689476 bar.
Use more decimals for technical pressure checks.
Converted bar pressure
2.06843 bar
30 PSI = 2.06843 bar
Original PSI
30 PSI
Input pressure.
Conversion factor
1 PSI = 0.0689476 bar
Precise factor: 0.0689475729318.
Kilopascals
206.84272 kPa
kPa is widely used in SI pressure contexts.
Atmospheres
2.04138 atm
Approximate standard atmosphere equivalent.
Reverse conversion
30 PSI
Bar converted back to PSI.
1 bar equivalent
14.503774 PSI
Useful when converting bar back into PSI.
Local conversion
All calculations run instantly in your browser.
Automotive friendly
Useful for tire pressure, pumps, gauges, and compressor settings.
Technical precision
Includes bar, kPa, atmosphere, and reverse PSI checks.
Dynamic Conversion Insights
What PSI and Bar Measure
PSI and bar both measure pressure.
PSI means pounds per square inch. It describes force applied over an area using imperial and US customary units.
Bar is a pressure unit close to atmospheric pressure and is widely used in metric pressure contexts.
PSI vs Bar Explained
PSI
1 PSI equals approximately 0.0689476 bar. PSI is common on US tire, pump, and compressor labels.
Bar
1 bar equals approximately 14.5038 PSI. Bar is widely used on international pressure gauges and equipment.
Gauge Pressure vs Absolute Pressure
Gauge pressure
Gauge pressure is measured relative to surrounding atmospheric pressure. Many tire and compressor readings are gauge pressure.
Absolute pressure
Absolute pressure is measured relative to a vacuum. Labels such as psia and bara usually indicate absolute pressure.
PSI and bar can be used for either gauge or absolute pressure. This converter changes units only and does not convert gauge pressure to absolute pressure.
Common PSI to Bar Examples
| PSI | Bar | Approx. use |
|---|---|---|
| 1 PSI | 0.06895 bar | Low to medium pressure |
| 10 PSI | 0.68948 bar | Low to medium pressure |
| 20 PSI | 1.37895 bar | Low to medium pressure |
| 30 PSI | 2.06843 bar | Common tire-pressure range |
| 32 PSI | 2.20632 bar | Common tire-pressure range |
| 35 PSI | 2.41317 bar | Common tire-pressure range |
| 40 PSI | 2.7579 bar | Common tire-pressure range |
| 50 PSI | 3.44738 bar | Higher pressure / tools |
| 100 PSI | 6.89476 bar | Higher pressure / tools |
Tires, Compressors, and Engineering Use Cases
Car tire pressure
Bicycle tire pressure
Motorcycle tire pressure
Air compressors
Pneumatic tools
Hydraulic systems
Pressure gauges
HVAC systems
Engineering calculations
Formula Explanation
Bar = PSI × 0.0689475729318
PSI = Bar ÷ 0.0689475729318
PSI = Bar × 14.503773773
Kilopascals = PSI × 6.89475729318
Example: 30 × 0.0689475729318 = 2.06843 bar
PSI is the input pressure. Multiply by 0.0689475729318 to convert PSI to bar. Results may be rounded for display. Unit conversion does not change whether the reading is gauge pressure or absolute pressure.
Frequently Asked Questions
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