Pressure Units Converter Online
getcalc.com's Online Pressure Converter is an easy to use online tool to convert pressure measurements across Metric (SI) and US Customary (USC) systems. Whether you are converting PSI to bar, kPa to psi, or atmosphere to pascals, this calculator provides instant, high-precision results.
Supported Pressure Units and Exact Conversion Factors
This pressure converter supports 7 standard units of pressure measurement. Below is the reference table of supported units, symbols, and equivalent values in Bar (base unit for this converter):
| Unit Name | Symbol | System | Base Value (relative to Bar) |
|---|---|---|---|
| Bar | bar | Metric (Base) | 1 bar (100,000 Pa) |
| Pascal | Pa | Metric (SI Base) | 0.00001 bar (100,000 Pa = 1 bar) |
| Kilopascal | kPa | Metric (SI) | 0.01 bar (100 kPa = 1 bar) |
| Megapascal | MPa | Metric (SI) | 10 bar (1 MPa = 10 bar) |
| Pounds per Square Inch | psi | US Customary | 14.50377 psi per bar |
| Standard Atmosphere | atm | Atmospheric | 1.01325 bar (101,325 Pa) |
| Centibar | cbar | Metric | 100 cbar per bar |
How to Use the Online Pressure Converter
Performing pressure unit conversions is simple and instant:
- Select Category: Choose Pressure in the top dropdown menu.
- Choose Source and Target Units: Select starting unit (e.g. PSI) and target unit (e.g. Bar).
- Enter Value: Type the numerical pressure value for instant calculation.
- Swap Units (⇄): Click Swap to flip conversion direction.
Metric (SI) vs. US Customary Pressure Measurement Systems
Pressure is force per unit area ($P = F / A$):
- Metric (SI) Pressure Units: The SI base unit is the Pascal (Pa = 1 N/m²). Kilopascals (kPa), Megapascals (MPa), and Bar (100,000 Pa) are used for meteorology, hydraulics, and tire pressure.
- US Customary Pressure Units: PSI (pounds per square inch) is standard in US automotive, HVAC, and industrial piping (1 bar ≈ 14.5038 psi).
Key Capabilities and Usability Features
Features engineered for high-precision pressure calculations:
- Real-time Instant Calculation: Updates output dynamically as you type.
- Bidirectional Conversion: Type in either left or right input box.
- One-Click Unit Swapping (⇄): Invert units with a single tap.
Popular Pressure Conversion Formulas and Examples
Quick formulas for pressure unit conversions:
| Conversion Pair | Formula / Factor | Practical Example |
|---|---|---|
| PSI to Bar | Bar = PSI ÷ 14.50377 | 32 psi ÷ 14.50377 = 2.2063 bar |
| Bar to PSI | PSI = Bar × 14.50377 | 2.5 bar × 14.50377 = 36.2594 psi |
| kPa to PSI | PSI = kPa × 0.145038 | 200 kPa × 0.145038 = 29.0075 psi |
Common Pressure Quick Reference Table
Quick lookup chart for tire and atmospheric pressure:
| PSI | Bar | kPa | Atmosphere (atm) |
|---|---|---|---|
| 30 psi | 2.0684 bar | 206.84 kPa | 2.0414 atm |
| 32 psi | 2.2063 bar | 220.63 kPa | 2.1775 atm |
| 35 psi | 2.4132 bar | 241.32 kPa | 2.3816 atm |
Usability and Keyboard Input Shortcuts Guide
Operate the Pressure Converter effortlessly using touch keypad or physical keyboard.
Practical Applications of Pressure Conversion
Essential for vehicle tire pressure (PSI vs. bar), HVAC compression, scuba diving depth tanks, meteorology, and hydraulic engineering.
How do I convert PSI to Bar?
To convert PSI to Bar, divide the pressure value in PSI by 14.50377. For example, 32 PSI ÷ 14.50377 = 2.2063 Bar.
How many PSI are in 1 Bar?
One Bar is equal to approximately 14.50377 PSI (pounds per square inch) or 100,000 Pascals (kPa = 100).
