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What is a Pressure Converter?

A pressure converter is a digital tool designed to convert pressure units from one system to another. Pressure is a physical quantity that represents force per unit area (P = F/A). In everyday use, we encounter various pressure units: Pascal (Pa) for scientific standards, bar for meteorology and industry, PSI (pound per square inch) for vehicle tires, mmHg (millimeters of mercury) for blood pressure, and atmosphere (atm) for gas pressure. Kalkulab's Pressure Converter is a practical solution for technicians, doctors, engineering students, and the general public who need to convert pressure units quickly and accurately. This tool supports 12+ pressure units including Pascal (Pa), kilopascal (kPa), bar, PSI, atmosphere (atm), mmHg (torr), inHg, and many more.

Pressure Conversion Factors

1 atm = 101325 Pa = 1.01325 bar = 14.696 PSI = 760 mmHgFormula: 1 Pa = 1 N/m² = 0.00001 bar = 0.000145 PSI

Variables:

  • 1 PaPascal (Pa)
    SI unit for pressure, equivalent to 1 Newton per square meter(e.g.: 1 Pa = 1 N/m²)
    💡 Scientific standard, physics, civil engineering
  • 1 barBar
    Pressure = 100,000 Pa, common in Europe and industry(e.g.: 1 bar = 100,000 Pa)
    💡 Meteorology, tire pressure, industry
  • 1 atmAtmosphere (atm)
    Standard atmospheric pressure at sea level(e.g.: 1 atm = 101325 Pa)
    💡 Science, physics, chemistry, gas
  • 1 PSIPound per Square Inch (PSI)
    Pressure in pounds per square inch, US standard(e.g.: 1 PSI = 6894.76 Pa)
    💡 Tire pressure, hydraulics, pneumatics
  • 1 mmHgMillimeter of Mercury (mmHg)
    Pressure equivalent to a 1 mm column of mercury(e.g.: 1 mmHg = 133.32 Pa)
    💡 Blood pressure, medical, barometer
  • 1 TorrTorr
    1 Torr = 1/760 atm = 1 mmHg(e.g.: 1 Torr = 133.32 Pa)
    💡 Vacuum, physics, chemistry

Categories:

SI UnitsPascal and its multiples
Industrial Unitsbar, PSI
Medical UnitsmmHg, kPa
Other Unitsatm, Torr, inHg

How to Use the KalkuLab Pressure Conversion Calculator

Using the KalkuLab pressure conversion calculator is easy. Follow these steps:

  1. 1

    Enter Pressure Value

    Type the value to convert (whole numbers or decimals).

  2. 2

    Select Source Unit

    Choose Pascal, bar, atm, PSI, mmHg, Torr, or others.

  3. 3

    View Results

    All unit conversions appear automatically.

  4. 4

    Optional: Reset

    Change units or reset to start over.

💡 Tip:

  • •Use a period (.) as decimal separator

Examples

Example 1: Tire Pressure

Problem:

Tire pressure 32 PSI. Value in bar?

Solution:
  1. 1.32 PSI × 0.0689 = 2.21 bar
Result:2.21 bar

Standard passenger car tire pressure range.

Example 2: Blood Pressure

Problem:

Blood pressure 120/80 mmHg. In kPa?

Solution:
  1. 1.120 ÷ 7.5 = 16 kPa
  2. 2.80 ÷ 7.5 = 10.7 kPa
Result:16/10.7 kPa

Normal adult blood pressure range.

Frequently Asked Questions

What is standard atmospheric pressure?
1 atm = 101,325 Pa = 1.01325 bar = 14.696 PSI = 760 mmHg.
How do I convert blood pressure units?
120 mmHg ≈ 16 kPa. Divide mmHg by 7.5 for approximate kPa.
What PSI for car tires?
Most passenger cars: 32–35 PSI (2.2–2.4 bar). Check your vehicle manual.

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References