Pound force per square inch conversion

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Pound force per square inch


  • psi
  • lb/in2
  • lbf/in2
  • lbf/sq in

Unit of:

  • Pressure

Worldwide use:

  • psi is commonly used worldwide, eg to measure car and bike tire pressure, SCUBA diving equipment, and domestic plumbing


1 psi is the pressure exterted by one pound-force of force being applied to an area of one square inch

Common references:

  • 50 psi is the typical pressure of water leaving a garden hose, 162 psi is the average pressure of a human bite. An aluminium SCUBA tank is typically pressurised to 3,000 psi

Usage context:

In widespread worldwide use - eg measuring tire pressures, SCUBA diving equipment pressue, and in domestic plumbing