Pressure Converter

Convert between PSI, bar, pascal, atmosphere, and other pressure units

Common Pressure Conversions

Atmosphere to Kilopascal
1 atm = 101.3 kPa
Bar to PSI
1 bar = 14.5 psi
PSI to Kilopascal
1 psi = 6.89 kPa
Torr to Pascal
1 torr = 133.3 Pa
mmHg to Pascal
1 mmHg = 133.3 Pa
inHg to Kilopascal
1 inHg = 3.39 kPa

Pressure in Real Life

Sea Level

≈ 1 atm (101.3 kPa, 14.7 psi)

Car Tire

≈ 32 psi (220 kPa, 2.2 bar)

Blood Pressure

≈ 120/80 mmHg (16/10.7 kPa)

Water Depth

10m depth ≈ +1 atm pressure

About Pressure Measurement

Pressure is the force applied perpendicular to a surface per unit area. It's a fundamental quantity in physics and engineering, measured in pascals (Pa) in the SI system. Pressure conversions are essential in meteorology, engineering, medicine, and many industrial applications.

Common Applications

  • • Weather forecasting and barometric readings
  • • HVAC system design and operation
  • • Automotive tire pressure monitoring
  • • Medical blood pressure measurements
  • • Industrial hydraulic and pneumatic systems
  • • Vacuum technology and process control

Unit Systems

  • SI: pascal (Pa), kilopascal (kPa)
  • Metric: bar, millibar, atmosphere
  • Imperial: psi, pounds per square inch
  • Medical: mmHg, torr
  • Weather: inHg, hectopascal (hPa)

Pressure Types

Absolute pressure is measured relative to a perfect vacuum, while gauge pressure is measured relative to atmospheric pressure. Most pressure gauges read gauge pressure. Atmospheric pressure at sea level is approximately 14.7 psi (101.3 kPa) absolute.