Pressure Converter

The Pressure Unit Converter tool lets you quickly and accurately convert between different pressure units. Simply enter a value in the input field, choose the source unit, choose the target unit, and the conversion is performed instantly.

This tool supports the most commonly used pressure units:

**Pascal (Pa)**: the SI unit of pressure, equal to one newton per square meter. Common in scientific and engineering applications.

**Kilopascal (kPa)**: equal to 1,000 pascals. Widely used in meteorology, engineering, and materials science.

**Bar**: a metric pressure unit equal to 100,000 pascals. Common in meteorology and industrial applications.

**Millibar (mbar)**: equal to 100 pascals. Common in weather forecasts and atmospheric pressure measurements.

**Standard atmosphere (atm)**: standard atmospheric pressure at sea level, equal to 101,325 pascals. Used in chemistry and physics.

**Pounds per square inch (psi)**: an imperial unit, common in the United States for tire pressure, hydraulic systems, and industrial applications.

**Millimeter of mercury (mmHg)**: a traditional unit still used in medicine for blood pressure measurement and in some scientific applications.

To convert between pressure units:

1. Enter the value you want to convert in the input field 2. Select the source unit (the unit your value is currently in) 3. Select the target unit (the unit you want to convert to) 4. The converted value appears automatically in the result field 5. Use the swap button to quickly reverse the conversion direction 6. Click the copy button to copy the result to your clipboard

Conversions are performed instantly as you type, making it easy to compare different units.

Different pressure units are used in various contexts:

**Pa / kPa**: scientific research, engineering calculations, material properties

**Bar / mbar**: weather forecasts, atmospheric pressure, industrial processes

**atm**: chemistry experiments, physics calculations, standard pressure references

**psi**: tire pressure (US), hydraulic systems, compressed air systems, plumbing

**mmHg**: blood pressure measurement, vacuum measurement, meteorology (historical)

Which unit to use depends on your application and geographic location.