Pressure Converter Calculator

Convert pressure measurements between different units quickly and accurately. This calculator supports common pressure units including Pascal (Pa), kilopascal (kPa), bar, atmosphere (atm), pounds per square inch (psi), and millimeters of mercury (mmHg).

Understanding Pressure Units

Pressure is defined as force per unit area. Different fields and industries use different pressure units based on historical precedent and practical considerations:

Pascal (Pa): The SI unit of pressure (1 N/m²)
Kilopascal (kPa): 1000 pascals, commonly used in meteorology
Bar: Approximately equal to atmospheric pressure at sea level (100,000 Pa)
Atmosphere (atm): Traditional unit based on average sea-level pressure
PSI: Pounds per square inch, common in US and UK
mmHg: Millimeters of mercury, often used in medical contexts for blood pressure

Common Conversions

Here are some commonly used pressure conversion factors:

1 atm = 101,325 Pa
1 bar = 100,000 Pa
1 psi ≈ 6,894.76 Pa
1 mmHg ≈ 133.322 Pa

Applications

Pressure conversion is essential in many fields:

Engineering: Design of hydraulic systems and pressure vessels
Medicine: Blood pressure measurements
Meteorology: Weather forecasting and atmospheric pressure
Manufacturing: Industrial processes and quality control
Automotive: Tire pressure monitoring
Diving: Underwater pressure calculations

Using the Calculator

Enter your pressure value in any unit
The calculator will automatically convert to all other units
Results are displayed with appropriate precision for each unit

Tips for Accurate Conversion

Double-check your input value
Pay attention to the unit prefixes (kilo-, milli-, etc.)
Consider the context of your measurement for appropriate precision
Be aware that some conversions may show small rounding differences

Safety Note

When working with pressure systems, always ensure you’re using the correct units. Mistakes in pressure conversion can lead to serious safety issues in industrial or medical applications.