Unit Converters

Pressure Converter

Convert pressure among SI units, bar, standard atmosphere, torr, pounds per square inch, and millimeters of mercury with each convention labeled separately.

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What Pressure Converter does

Pressure Converter converts a numeric pressure between the explicitly labeled units in the selector. Changing the value or either unit recalculates the result immediately.

The factor table normalizes values through pascals, using 101,325 pascals per standard atmosphere and explicit, slightly different definitions for torr and mmHg. This is a unit conversion, not a measurement or lookup: the result is determined only by the number and units supplied in the browser.

How to use Pressure Converter

  1. Enter a finite numeric pressure value.
  2. Choose the source unit and the unit required for the result.
  3. Read the converted value with its destination symbol, or use Swap units to reverse the direction.
  4. Carry only the precision justified by the original measurement when copying the result.

Important details

Supported units

Supported choices are pascal, kilopascal, megapascal, bar, millibar, standard atmosphere, torr, pound per square inch, and millimeter of mercury.

A distinction that matters

The numeric conversion does not distinguish gauge pressure from absolute pressure. That reference must already be known; converting units does not add or remove atmospheric pressure.

Practical uses

  • Compare tire or equipment specifications written in PSI, bar, or kPa.
  • Translate laboratory readings among pascals, atmospheres, and torr.
  • Convert weather or process-pressure values when the pressure reference is already known.

Privacy and limitations

Pressure Converter performs its arithmetic locally. PagesTools does not receive the entered value or selected units.

No altitude, temperature, fluid density, gauge offset, or sensor calibration is applied. Torr and mmHg are retained as separate factors, and displayed precision does not improve the original instrument reading.

Common questions

Frequently asked questions

Does Pressure Converter change gauge pressure to absolute pressure?

No. It changes units only. Gauge and absolute pressure use different reference points, so converting between them requires the applicable atmospheric pressure in addition to a unit conversion.

Are torr and mmHg exactly identical in this table?

They are separate entries with very close but slightly different factors. Choose the unit stated by the source rather than assuming the labels are interchangeable.

Can the result verify a pressure sensor?

No. A factor conversion cannot assess calibration, uncertainty, temperature response, or installation. Compare critical sensor readings with suitable calibrated equipment.