PSI to Bar
Professional grade pressure conversion. Perfect for automotive, diving, and hydraulic engineering calculations.
To convert PSI to bar, multiply the psi value by 0.0689476. Standard atmospheric pressure is 14.7 psi, which equals 1.013 bar. A typical car tire runs at 32–35 psi (2.2–2.4 bar). This conversion is essential for mechanics, cyclists inflating bike tires to 30 psi (2.07 bar), and industrial equipment operators who work across both pressure systems.
Pressure Conversion Context
Pressure measurement is critical across various industries, yet standards vary globally. In the United States, Pounds per Square Inch (PSI) is the dominant unit for everything from tire pressure to air compressor specifications. However, in Europe and much of the metric world, Bar is the preferred unit. Converting 1 PSI to approximately 0.0689 Bar is a common task for mechanics and engineers working with international equipment.
Bar = PSI × 0.0689476PSI = Bar × 14.5038 Automotive maintenance is one of the most frequent use cases for this converter. For example, a standard car tire typically requires 32-35 PSI, which equates to roughly 2.2 to 2.4 Bar. Similarly, heavy-duty air compressors often list specs in both units to cater to global markets. In hydraulic systems, where pressure can reach extreme levels, converting to Megapascals (MPa) is also common for structural integrity calculations.
Diving and specialized gas storage also rely on precise pressure monitoring. A standard scuba tank is filled to approximately 3,000 PSI, or about 207 Bar. Professional divers must understand these ratios to manage gas consumption and safety. Whether you are checking atmosphere (atm) levels for weather science or millimeters of mercury (mmHg) for specialized laboratory pumps, this tool provides the precision required for scientific and industrial applications.
Pressure Reference Table
| Application | PSI | Bar | kPa | atm |
|---|---|---|---|---|
| Standard Atmosphere (1 atm) | 14.7 psi | 1.013 bar | 101.3 kPa | 1.00 atm |
| Bicycle Tire (Avg) | 30.0 psi | 2.068 bar | 206.8 kPa | 2.04 atm |
| Passenger Car Tire | 33.0 psi | 2.275 bar | 227.5 kPa | 2.25 atm |
| Home Water Pressure | 60.0 psi | 4.137 bar | 413.7 kPa | 4.08 atm |
| Workshop Compressor | 100.0 psi | 6.895 bar | 689.5 kPa | 6.80 atm |
| Scuba Tank (Full) | 3000 psi | 206.8 bar | 20,684 kPa | 204.1 atm |
Frequently Asked Questions
What is 32 psi in bar?
32 psi (standard car tire pressure) is approximately 2.206 bar. Conversion is instant and offline.
How many bar is 14.7 psi?
14.7 psi is equal to approximately 1.013 bar, which is the standard atmospheric pressure (1 atm).
What is the bar equivalent for a 3000 psi scuba tank?
A 3000 psi tank is approximately 206.84 bar. This tool works without any data leaving your device.
How do I convert 100 psi to kPa?
100 psi is equal to 689.476 kPa. Vietaro provides high-performance calculations in your browser.
Does this tool work without internet?
Yes, once loaded, the converter works 100% offline and requires no installation.
What is the formula for PSI to bar?
To find bar, multiply psi by 0.0689476. To find kPa, multiply psi by 6.89476.