⚙️ Bar to PSI Converter
Instantly convert pressure from bar to pounds per square inch (psi). The bar is a metric unit of pressure commonly used in Europe and many other countries, while psi is the standard pressure unit used in the United States and the UK.[reference:0]
What Is the Bar Unit?
The bar is a metric unit of pressure defined as exactly 100,000 pascals (Pa). It is commonly used in many countries around the world, particularly in Europe, for measuring pressure in various applications including:
- Tyre pressure — car, bicycle, and motorcycle tyres
- Compressed air systems — industrial and automotive
- Hydraulic systems — machinery and equipment
- Meteorology — atmospheric pressure (1 bar ≈ 0.987 atm)
- Scuba diving — tank pressure measurement
The bar is not an SI unit but is accepted for use with the SI system. It is approximately equal to the average atmospheric pressure at sea level (1 atm = 1.01325 bar).
What Is PSI?
PSI (pounds per square inch) is a unit of pressure commonly used in the United States and the United Kingdom. It is defined as the pressure resulting from a force of one pound-force applied to an area of one square inch.
PSI is widely used in:
- Tyre pressure — vehicle tyres in the US and UK
- Compressed air — pneumatic tools and systems
- Water pressure — plumbing and irrigation
- Industrial applications — manufacturing and engineering
How to Convert Bar to PSI
The formula to convert bar to psi is:
PSI = Bar × 14.5038
To convert psi to bar: Bar = PSI × 0.0689476
For example, to convert 2.5 bar to psi:
PSI = 2.5 × 14.5038
PSI = 36.26 psi
To convert 32 psi to bar:
Bar = 32 × 0.0689476
Bar = 2.21 bar
Why Use This Converter?
- Instant results: Get accurate pressure conversions in real-time.
- Bidirectional conversion: Convert both bar to psi and psi to bar.
- Step-by-step breakdown: See exactly how the conversion is calculated.
- Common reference table: Quickly check pressures from 0.1 to 10 bar.
- Free & private: No registration, no data storage — all calculations are done in your browser.
❓ Bar to PSI FAQ
What is the formula to convert bar to psi?
The formula is PSI = Bar × 14.5038. To convert psi to bar, use Bar = PSI × 0.0689476.
What is the difference between bar and psi?
Bar is a metric unit of pressure (1 bar = 100,000 Pa) commonly used in Europe and many other countries. PSI (pounds per square inch) is the standard pressure unit used in the United States and the UK.
How many psi are in 1 bar?
There are 14.5038 psi in 1 bar.
How many bar are in 1 psi?
There are 0.0689476 bar in 1 psi.
What is the typical car tyre pressure in bar and psi?
Most car tyres have a recommended pressure of 2.2 – 2.5 bar, which is approximately 32 – 36 psi.
What is atmospheric pressure in bar and psi?
Standard atmospheric pressure at sea level is approximately 1.01325 bar, which is equivalent to 14.696 psi.
Is bar an SI unit?
No, the bar is not an SI unit, but it is accepted for use with the SI system. The SI unit for pressure is the pascal (Pa). 1 bar = 100,000 Pa.
How accurate is this converter?
This converter provides highly accurate results using the standard conversion formula PSI = Bar × 14.5038. You can adjust the decimal precision to suit your needs.
Is this converter free?
Yes, this converter is completely free to use. No registration or personal data storage is required.
Can I convert psi to bar with this tool?
Yes, simply select "PSI" as the "From" unit and "Bar" as the "To" unit, or use the dedicated PSI to Bar Converter.