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Pressure Converter - Pressure & Atmospheric Unit Converter

Convert between Pascal, bar, psi, atm, torr, and other pressure units with precision and ease.

Input Pressure

Converted Pressure

Converted value will appear here

What is Pressure Converter?

Pressure Converter is a free online tool that converts between different units of pressure. It supports metric units (Pascal, bar), imperial units (psi, psf), atmospheric pressure (atm), and mercury/water column measurements. Perfect for engineering, physics, meteorology, and industrial applications.

How to Use Pressure Converter

  1. Enter the pressure value in the input field
  2. Select the source unit from the dropdown menu
  3. Select the target unit from the output dropdown
  4. The conversion happens automatically as you type
  5. Use the "Swap Units" button to quickly reverse the conversion
  6. Copy the result using the copy button
  7. Use "Clear" to reset all values

Supported Units

Metric Units

  • • Pascal (Pa) - Base SI unit
  • • Kilopascal (kPa) - 1,000 Pa
  • • Megapascal (MPa) - 1,000,000 Pa
  • • Bar - 100,000 Pa
  • • Millibar (mbar) - 100 Pa

Imperial Units

  • • Pounds per square inch (psi)
  • • Pounds per square foot (psf)
  • • Atmosphere (atm) - Standard atmospheric pressure

Mercury Column

  • • Torr - 1/760 atm
  • • Millimeters of mercury (mmHg)
  • • Inches of mercury (inHg)

Water Column

  • • Millimeters of water (mmHâ‚‚O)
  • • Inches of water (inHâ‚‚O)

Frequently Asked Questions

How accurate are the conversions?

All conversions use standard conversion factors and are accurate to 6 decimal places. For most practical purposes, this provides excellent precision.

What's the difference between gauge and absolute pressure?

This converter handles absolute pressure values. Gauge pressure is relative to atmospheric pressure, while absolute pressure includes atmospheric pressure in the measurement.

Is my data secure?

Yes, all calculations happen locally in your browser. Your data never leaves your device.

Can I use this offline?

Yes, once loaded, the converter works completely offline in your browser.