Calculator Suite
Pressure Converter
Convert between pascals, bar, psi, atmospheres and other pressure units
Popular Pressure Converter Conversions
Quick Presets
Base Unit Method
= Value in target unit
= Value in input unit
= Conversion factor to base
= Conversion factor from base
Category-Specific Formula
Pressure Fundamentals
Pressure is force applied over an area (P = F/A). The pascal (Pa) is the SI unit, equal to one newton per square meter. Atmospheric pressure at sea level is about 101,325 Pa.
Atmospheric Pressure
Standard atmosphere (atm) represents average sea-level pressure. Weather systems cause pressure variations, measured in millibars or inches of mercury (inHg) for barometric pressure.
Industrial Applications
PSI (pounds per square inch) is common for tire pressure, hydraulic systems, and compressed air. Bar is used in meteorology and engineering, approximately equal to atmospheric pressure.
Medical and Scientific
Blood pressure uses mmHg (millimeters of mercury). Vacuum systems use torr (1/760 of an atmosphere). High-precision work requires exact pressure conversions.
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