Pressure Converter

What is a Pressure Converter?

A pressure converter is a tool that allows you to quickly and accurately convert between different units of pressure, such as pascal, kilopascal, bar, psi, atmosphere, torr, mmHg, inHg, cmH₂O, and mmH₂O. This is essential for science, engineering, weather, and everyday life when working with different measurement systems.

Supported Pressure Units

• Pascal (Pa): The SI unit of pressure. 1 Pa = 1 N/m².
• Kilopascal (kPa): 1,000 pascals. Used in meteorology and engineering.
• Megapascal (MPa): 1,000,000 pascals. Used for high pressures in engineering.
• Bar (bar): 100,000 pascals. Used in meteorology and industry.
• Millibar (mbar): 100 pascals. Used in meteorology.
• Atmosphere (atm): 101,325 pascals. Standard atmospheric pressure.
• Torr (Torr): 133.322368 pascals. Used in vacuum measurements.
• Millimeter of mercury (mmHg): 133.322368 pascals. Used in blood pressure and vacuum.
• Inch of mercury (inHg): 3,386.389 pascals. Used in aviation and meteorology.
• Pound per square inch (psi): 6,894.757 pascals. Used in the US for tire pressure and hydraulics.
• Centimeter of water (cmH₂O): 98.0665 pascals. Used in medicine and engineering.
• Millimeter of water (mmH₂O): 9.80665 pascals. Used in medicine and engineering.

Real Life Pressure Examples

• Atmospheric pressure at sea level: ≈ 101,325 Pa (1 atm, 1.013 bar, 14.7 psi)
• Car tire pressure: ≈ 2.2–2.5 bar (220–250 kPa, 32–36 psi)
• Blood pressure (normal adult): ≈ 120/80 mmHg (systolic/diastolic)
• Pressure in a bicycle tire: ≈ 4–7 bar (400–700 kPa, 58–100 psi)
• Pressure in a scuba tank: ≈ 200 bar (20,000 kPa, 2,900 psi)
• Vacuum cleaner suction: ≈ 20 kPa below atmospheric pressure
• Pressure in a soda can (carbonation): ≈ 2–3 bar (200–300 kPa, 29–44 psi)

How to Use the Pressure Converter

1. Enter the value you want to convert.
2. Select the unit you are converting from.
3. View instant conversions to all other supported units below.

Why Use ManyCalcs Pressure Converter?

• Completely free and ad-free.
• Supports all major pressure units.
• Instant, accurate, and easy-to-use interface.
• Mobile-friendly and accessible on any device.
• Educational content for every unit.

Frequently Asked Questions

How do I convert pascal to psi?

Enter the value in pascals, select "Pascal (Pa)", and view the result in psi in the output list.

What is the difference between bar and atmosphere?

1 bar = 100,000 pascals, 1 atmosphere = 101,325 pascals. Atmosphere is slightly higher than bar.

What is mmHg used for?

Millimeter of mercury (mmHg) is used in blood pressure and vacuum measurements.

Is this pressure converter free?

Yes, the ManyCalcs pressure converter is 100% free and always will be.

For more information, see Units of pressure on Wikipedia.