Pressure Converter

Convert between different units of pressure including PSI, bar, atm, Pa, kPa, mmHg, and torr with precision.

Popular Conversions

Pressure Units

Pascal (Pa)
SI base unit of pressure, 1 Pa = 1 N/m²
Bar
Metric unit, 1 bar = 100,000 Pa, commonly used in meteorology
PSI (lbf/in²)
Pounds per square inch, common in US engineering
Atmosphere (atm)
Standard atmospheric pressure at sea level, ≈101,325 Pa
Millimeters of Mercury (mmHg)
Traditional unit used in medicine and meteorology
Torr
1 Torr = 1 mmHg, named after Evangelista Torricelli

Conversion Tips

  • 1 atm = 101,325 Pa = 1.01325 bar = 14.6959 PSI
  • 1 bar = 100,000 Pa = 14.5038 PSI = 0.986923 atm
  • Standard atmospheric pressure = 760 mmHg = 29.9213 inHg
  • 1 PSI = 6,894.76 Pa = 0.0689476 bar