Pressure Unit Converter

Convert between different units of pressure including Pascal (Pa), bar, atmosphere (atm), psi (pounds per square inch), torr, and more. Essential for engineering, physics, and industrial applications.

Base Unit: 1 Pascal (Pa) = 0.00001 bar = 9.8692×10⁻⁶ atm = 0.000145038 psi = 0.00750062 torr = 0.001 kPa = 1×10⁻⁶ MPa = 0.01 mbar = 1.0197×10⁻⁵ kgf/cm² = 0.0002953 inHg

About This Pressure Unit Converter

Our Pressure Unit Converter provides precise conversions between different units used to measure pressure in various scientific, engineering, and industrial applications. The tool is essential for professionals working with fluid systems, HVAC, pneumatic controls, and atmospheric studies.

The converter uses exact conversion factors based on standard definitions, ensuring accurate results for both practical applications and theoretical calculations. All conversions are derived from the base unit of Pascal (Pa), the standard SI unit for pressure measurement.

Key Features

Comprehensive Units

Convert between 10 different pressure units including SI, imperial, and specialized measurements like atmospheres and torr.

Industry Standard

Uses precise conversion factors recognized by engineering and scientific communities worldwide.

Real-time Conversion

See results instantly as you type or change units for seamless workflow integration.

Educational

Learn about relationships between different pressure measurement systems used across industries.

Why Choose Our Converter?

  • Accuracy: Uses exact conversion factors from scientific standards
  • Versatility: Covers both metric and imperial units plus specialized measurements
  • User-Friendly: Clean interface with intuitive controls designed for professionals
  • Responsive: Works perfectly on desktop, tablet, and mobile devices
  • No Installation: Web-based tool accessible from any browser without downloads

Frequently Asked Questions

What is the difference between psi and bar?

PSI (pounds per square inch) is an imperial unit of pressure, while bar is a metric unit. 1 bar equals approximately 14.5038 psi. Bar is commonly used in Europe and for atmospheric pressure measurements, while psi is widely used in the United States for tire pressure, scuba tanks, and other applications.

How is standard atmospheric pressure defined?

Standard atmospheric pressure (1 atm) is defined as 101,325 Pa, 1.01325 bar, 760 torr (mmHg), or 14.6959 psi. This represents the average atmospheric pressure at sea level at 15°C. It serves as a reference point for many pressure measurements and calculations.

What is a torr and where is it used?

A torr is a unit of pressure based on an absolute scale, named after Evangelista Torricelli. 1 torr is equal to 1 mmHg (millimeter of mercury) at 0°C. It’s commonly used in vacuum measurements, barometry, and blood pressure monitoring (though blood pressure is typically measured in mmHg).

When would I use megapascals (MPa)?

Megapascals are typically used for measuring very high pressures. 1 MPa equals 1,000,000 Pa or about 145 psi. Common applications include hydraulic systems, material strength testing (like concrete or steel), and high-pressure gas storage. It’s the preferred SI unit for engineering applications involving high pressures.

What is kgf/cm² and where is it used?

kgf/cm² (kilogram-force per square centimeter) is a metric unit where 1 kgf/cm² equals 98,066.5 Pa. It’s commonly used in some countries for tire pressure, scuba diving, and industrial equipment. While not an SI unit, it remains in use in certain industries and regions, particularly where metric measurements are preferred but psi isn’t used.