Convert psi to bar
Quick Navigation
Understanding Pressure Unit Conversion
Pressure is the force applied perpendicular to a surface per unit area. It is measured in several different units depending on the application and region. The most common pressure units include PSI (pounds per square inch), Bar, kPa (kilopascals), MPa (megapascals), atm (standard atmospheres), and mmHg (millimeters of mercury).
Converting between pressure units is essential in engineering, automotive, HVAC, meteorology, and medical applications. Our free pressure unit converter handles all major pressure units with instant, accurate results. Whether you are checking tire pressure, calibrating industrial equipment, or studying atmospheric science, this tool provides the precision you need.
- 1 PSI = 0.068948 Bar
- 1 PSI = 6.8948 kPa
- 1 PSI = 0.006895 MPa
- 1 PSI = 0.068046 atm
- 1 PSI = 51.7149 mmHg
PSI to Bar Quick Reference
| PSI | Bar |
|---|---|
| 10 PSI | 0.689 Bar |
| 20 PSI | 1.379 Bar |
| 30 PSI | 2.068 Bar |
| 40 PSI | 2.758 Bar |
| 50 PSI | 3.447 Bar |
| 75 PSI | 5.171 Bar |
| 100 PSI | 6.895 Bar |
| 150 PSI | 10.342 Bar |
| 200 PSI | 13.79 Bar |
| 300 PSI | 20.684 Bar |
When You Need Pressure Conversion
Pressure conversion is critical across many industries and everyday situations:
- Automotive: Tire pressure is measured in PSI in the US but in Bar or kPa in Europe and Asia. Correct tire pressure improves fuel efficiency, tire lifespan, and vehicle safety.
- HVAC & Refrigeration: Technicians regularly convert between PSI and kPa when working with refrigerant pressures and system specifications from different manufacturers.
- Scuba Diving: Dive gauges may display pressure in Bar or PSI depending on the manufacturer. Understanding both units is critical for dive safety planning.
- Medical: Blood pressure is traditionally measured in mmHg, while other medical equipment may use kPa or other units.
- Industrial Engineering: Hydraulic systems, boilers, and pressure vessels have specifications in various units depending on the country of manufacture.
Popular Conversions
All Conversions
Official Sources & References
Our conversion data is based on internationally recognized standards:
- NIST — SI Pressure Units
- Wikipedia — Pressure Measurement
- Engineering Toolbox — Pressure
- UnitConverters — Pressure
This converter is for informational and educational purposes only. Always verify critical measurements with official standards.