Enter Pressure

Pressure Value 1
0 250 500 750 1000
Enter the pressure value to convert (0 to 1000)
From Unit Bar (bar)
Select the unit to convert from
To Unit Pounds per Square Inch (psi)
Select the unit to convert to
Common Conversions Quick Convert
Quickly convert common pressure units
1
Bar
(bar)
14.5038
PSI
(psi)
1 bar = 14.5038 psi
Conversion Rate
1 psi = 0.0689476 bar
Inverse Rate

All Units Conversion

Real World Pressure Examples

1 bar is approximately atmospheric pressure at sea level

Recent Conversions

Pressure Units Explained

Metric System

  • Pascal (Pa): SI unit of pressure
  • Kilopascal (kPa): 1000 pascals
  • Bar (bar): 100,000 pascals
  • Millibar (mbar): 1/1000 of a bar
Used worldwide in science and engineering

Imperial System

  • PSI (psi): Pounds per square inch
  • KSI (ksi): Kilopounds per square inch
  • Inch of Mercury (inHg): Used in aviation
  • Foot of Water (ftH₂O): Used in plumbing
Primarily used in the United States

Atmospheric Units

  • Atmosphere (atm): Standard atmospheric pressure
  • Technical Atmosphere (at): 1 kgf/cm²
  • Torr (Torr): 1/760 of an atmosphere
  • mmHg: Millimeter of mercury
Used in meteorology and medicine

Specialized Units

  • Megapascal (MPa): Used in material science
  • Gigapascal (GPa): Used in geology
  • Poundal per square foot: Rare imperial unit
  • Barye: CGS unit of pressure
Used in specific scientific fields

About Pressure Conversion

The Pressure Converter helps you convert between different pressure measurement units used in engineering, science, meteorology, and industry. Whether you're working with tire pressure, hydraulic systems, or atmospheric data, this tool provides accurate conversions instantly.

Common Conversion Formulas

Bar to PSI

1 bar = 14.5038 psi
Formula: psi = bar × 14.5038

PSI to Bar

1 psi = 0.0689476 bar
Formula: bar = psi × 0.0689476

Atmosphere to Pascal

1 atm = 101,325 Pa
Formula: Pa = atm × 101,325

mmHg to PSI

1 mmHg = 0.0193368 psi
Formula: psi = mmHg × 0.0193368

Practical Applications

Automotive & Tires

  • Tire pressure monitoring
  • Fuel system pressure
  • Brake hydraulic pressure
  • Air conditioning systems

Industrial & Manufacturing

  • Hydraulic system pressure
  • Pneumatic tool pressure
  • Boiler and steam pressure
  • Compressed air systems

Medical & Healthcare

  • Blood pressure monitoring
  • Respiratory equipment
  • Medical gas systems
  • Sterilization equipment

Meteorology & Aviation

  • Atmospheric pressure
  • Barometric pressure
  • Altimeter settings
  • Weather forecasting

Conversion Examples

From To Value Result Formula
2 Bar PSI 2 bar 29.0076 psi 2 × 14.5038
30 PSI Bar 30 psi 2.06843 bar 30 × 0.0689476
1 Atmosphere Pascal 1 atm 101,325 Pa 1 × 101,325
760 mmHg PSI 760 mmHg 14.696 psi 760 × 0.0193368
100 kPa Bar 100 kPa 1 bar 100 × 0.01

How do I convert bar to psi?

To convert bar to psi, multiply the pressure in bar by 14.5038. For example, 2 bar = 2 × 14.5038 = 29.0076 psi.

What is normal atmospheric pressure?

Normal atmospheric pressure at sea level is approximately 1 atmosphere (atm), which equals 101.325 kPa, 14.696 psi, 760 mmHg, or 1.01325 bar.

What is the difference between gauge and absolute pressure?

Gauge pressure is measured relative to atmospheric pressure. Absolute pressure is measured relative to a perfect vacuum. Absolute pressure = Gauge pressure + Atmospheric pressure.

What pressure should car tires have?

Most passenger car tires require 30-35 psi (2.0-2.4 bar). Always check your vehicle's manual for specific recommendations.