バー～大気（atm） Pressure Converter

To convert pressure, enter the value in the input field, select the original unit (pascals, kilopascals, bar, psi, etc.), and choose the target unit. Click the Convert Pressure button to see instant, precise results for engineering, meteorology, automotive, or scientific applications.

The Pressure Converter supports comprehensive units including pascals (Pa), kilopascals (kPa), megapascals (MPa), bar, millibar (mbar), pounds per square inch (psi), atmospheres (atm), torr, millimeters of mercury (mmHg), inches of mercury (inHg), and inches of water, covering all common pressure measurement needs.

Pressure conversion is crucial in engineering, meteorology, physics, automotive, HVAC, industrial applications, and aviation. It ensures accurate measurements, proper equipment calibration, safety compliance, compatibility across different systems and regions, and enables professionals to work with their preferred unit system.

Yes, the Pressure Converter seamlessly converts between metric units (pascals, bar, kPa) and imperial units (psi, inches of mercury, inches of water), providing accurate results for international projects, equipment specifications, and cross-system compatibility in engineering and industrial applications.

The Pressure Converter uses internationally recognized, precise conversion factors ensuring maximum accuracy. All calculations maintain high precision suitable for professional engineering, scientific research, industrial processes, and safety-critical applications requiring exact pressure measurements.

Yes, the Pressure Converter handles an extensive range from ultra-low vacuum pressures in pascals to extremely high industrial pressures in megapascals or thousands of psi, ensuring flexibility for applications from vacuum chambers to hydraulic systems and high-pressure vessels.

Enter your psi value, select psi as source, choose bar as target, and convert. One bar equals approximately 14.5 psi. Car tires typically require 30-35 psi (2.1-2.4 bar). European specifications use bar while American use psi, making conversion essential for international tire pressure guidelines.

Absolute pressure measures against perfect vacuum (zero pressure). Gauge pressure measures against atmospheric pressure (zero = ambient pressure). Most gauges show gauge pressure. Add atmospheric pressure (~101.3 kPa or 14.7 psi) to gauge pressure to get absolute pressure. Specify which type when measuring.

Weather reports use millibars (mbar), inches of mercury (inHg), or hectopascals (hPa, same as mbar). Standard atmospheric pressure is 1013.25 mbar, 29.92 inHg, or 1 atm. Convert between units to understand weather forecasts, barometric trends, and pressure system movements.

HVAC uses various units: inches of water (inH2O) for duct pressure, psi for refrigerant lines, and pascals for international systems. Understanding conversions helps with system design, troubleshooting, proper equipment specification, and ensuring optimal heating/cooling performance.

Vacuum pressure is below atmospheric. It's expressed as negative gauge pressure or positive absolute pressure. For vacuum applications, use torr, mbar, or pascal units. Perfect vacuum is 0 torr or 0 Pa absolute. Convert between units for vacuum pumps, chambers, and scientific equipment specifications.

Atmospheric pressure decreases with altitude—roughly 12% per 1000m. Sea level is 101.3 kPa (1013 mbar), while Mt. Everest summit is about 33.7 kPa. Conversions help adjust weather readings, understand altitude effects, calibrate instruments, and account for pressure changes in aviation and mountaineering.

Hydraulic systems commonly use psi or bar. Convert equipment ratings to match your pressure gauge units. Hydraulic pressures range from 500 psi (light duty) to 10,000+ psi (heavy equipment). Accurate conversion is critical for safety, proper component selection, and system design.

Blood pressure uses mmHg (millimeters of mercury) globally. While conversion to other units is possible, medical standards universally use mmHg. Normal blood pressure is around 120/80 mmHg. Conversions to kPa or other units aren't typically used in medical contexts.