• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
SensorsONE

SensorsONE

Measurement Instrumentation Products

  • Products
  • Tools
  • Contact

oz/in² – Ounce per Square Inch Pressure Unit

Ounce or Ounce Force per Square Inch is a low pressure unit which is part of the British and American system of units. 1 ounce per square inch equals 430.922 pascals.

The ozf/in² is used mostly for very low pressure rated equipment such as breather valves or controllers for LP natural gas appliances.

There are exactly 16 oz/in² in 1 psi which duplicates the relationship between pounds and ounces used to measure mass and weight.

To convert 1 oz/in² into other pressure units please use the list of conversion factors below.

Click on a pressure unit link to obtain the equivalent oz/in² conversion value.

To convert different different values of ozf/in² please use our on page pressure calculator.

See how oz/in² are derived from SI units and check whether a unit matches one of the versions of identifying oz/in2.

Low pressure measurement products
  • Compound +/-200 mb g pressure transmitter with 1/2 BSPT
  • Bi-directional -20 to +100 Pa clean room air diff pressure transmitter
  • DPS Low Differential Pressure Transmitter 20 Pa DP range 0-10V output air pressure sensor for building management use
  • TSA Precision Pressure Transmitter

Contents

  • Conversion Factors
  • Derivation
      • Formula
      • SI Units
      • Input Values
      • Calculation
  • Alternate Descriptions
  • Conversion Tables

Conversion Factors

  • 0.00430922 bar
  • 0.0625 psi
  • 4.30922 mbar
  • 430.922 N/m²
  • 430.922 Pa
  • 4.30922 hPa
  • 0.430922 kPa
  • 0.000430922 MPa
  • 0.00439418 kg/cm²
  • 43.9418 mmH2O 4°C (39.2°F)
  • 4.39418 cmH2O 4°C (39.2°F)
  • 0.0439418 mH2O 4°C (39.2°F)
  • 1.72999 inH2O 4°C (39.2°F)
  • 0.144166 ftH2O 4°C (39.2°F)
  • 3.23218 mmHg 0°C (32°F)
  • 0.323218 cmHg 0°C (32°F)
  • 0.127251 inHg 0°C (32°F)
  • 3.23218 Torr
  • 3232.18 mTorr
  • 0.00425287 atm
  • 0.00439418 at
  • 4309.22 dyn/cm²
  • 1 oz/in²
  • 3232.18 µHg 0°C (32°F)
  • 0.0000279018 tsi (uk, long)
  • 0.00003125 tsi (usa, short)
  • 0.0045 tsf (usa, short)
  • 9 psf
  • 4.39418 g/cm²

Please note that the conversion factors above are accurate to 6 significant figures.

Low pressure measurement products
  • 3 wire 4 to 20mA pressure transmitter to measure 100 mbar
  • DPS Low Differential Pressure Transmitter Using 25 mbar DP sensor on vacuum below 0.2 bar absolute
  • Four cleanroom zones monitoring system to measure overpressure, temperature & humidity
  • Bi-directional -20 to +100 Pa clean room air diff pressure transmitter

Derivation

The calculation below shows how the pressure unit Ounce per Square Inch (oz/in²) is derived from SI Units.

Formula

  • Pressure = Force / Area
  • Force = Mass x Acceleration
  • Acceleration = Distance / (Second x Second)

SI Units

  • Mass: kilogram (kg)
  • Length: metre (m)
  • Time: second (s)
  • Force: newton (N)
  • Pressure: pascal (Pa)

Input Values

  • 1 Ounce = 0.02834952313 kg
  • 1 Inch = 0.0254 m
  • 1 Square Inch = 0.0254 m x 0.0254 m = 0.00064516 m²
  • Acceleration = Standard Gravity = 9.80665 m/s²

Calculation

  • 1 Ounce Force = 0.02834952313 kg x 9.80665 m/s² = 0.278013851 N
  • 1 oz/in² Pressure = 0.278013851 N / 0.00064516 m² = 430.9223309 Pa
Low pressure measurement products
  • LEX1 (Ei) High Accuracy Digital Pressure Gauge
  • ATEX approved negative 10 mbar vacuum pressure transmitter
  • DMP331P Hygienic Flush Pressure Transmitter
  • DPS Low Differential Pressure Transmitter 20 Pa DP range 0-10V output air pressure sensor for building management use

Alternate Descriptions

These are the different versions used for identifying oz/in² that you may find elsewhere.

  • Ounce per Square Inch
  • Ounce Force per Square Inch
  • Ounces per Square Inch
  • Ounces Force per Square Inch
  • oz/in²
  • ozf/in²
  • oz/in^2
  • ozf/in^2
  • oz/sq in
  • ozf/sq in

Conversion Tables

Select a look up table for converting a pressure reading in ounces force per square inch to other measurement units.

  • psi  »  0.1 to 2000 oz/in² → 0.0625 to 125.000 psi
Low pressure measurement products
  • Trichloroethylene compatible 100 mbar Ex pressure transmitter
  • 0-50 mbarg 4-20 mA output natural gas monitoring pressure sensor
  • Natural gas booster pump inlet/outlet pressure transmitters for backup power generators
  • TM Silicon Strain Gauge Pressure Transducer

Measurement Unit Related Terms

More pages related to measurement unit technical terms.

  • at – Technical Atmosphere Pressure Unit
  • atm – Standard Atmosphere Pressure Unit
  • bar Pressure Unit
  • cmH2O – Centimetres of Water Column at 4 deg C Pressure Unit
  • cmHg – Centimetres of Mercury at 0 deg C Pressure Unit
  • daPa – Dekapascal Pressure Unit
  • dyn/cm² – Dyne per Square Centimetre Pressure Unit
  • ftH2O – Feet of Water Column at 4 deg C Pressure Unit
  • g – Acceleration due to Gravity
  • g/cm² – Grams per Square Centimetre Pressure Unit
  • hPa – Hectopascal Pressure Unit
  • inH2O – Inches of Water Column at 4 deg C Pressure Unit
  • inHg – Inches of Mercury at 0 degrees C Pressure Unit
  • kg/cm² – Kilogram per Square Centimetre Pressure Unit
  • kg/mm² – Kilogram per Square Millimetre Pressure Unit
  • kPa – Kilopascal Pressure Unit
  • ksi – Kilopounds per Square Inch Pressure Unit
  • mbar – Millibar Pressure Unit
  • mH2O – Metres of Water Gauge at 4 deg C Pressure Unit
  • mmH2O – Millimetres of Water Column at 4 deg C Pressure Unit
  • mmHg – Millimetres of Mercury at 0 deg C Pressure Unit
  • MPa – Megapascal Pressure Unit
  • mPa – Millipascal Pressure Unit
  • mTorr – Millitorr Pressure Unit
  • N/cm² – Newton per Square Centimetre Pressure Unit
  • N/m2 – Newton per Square Metre Pressure Unit
  • N/mm² – Newton per Square Millimetre Pressure Unit
  • Pa – Pascal Pressure Unit
  • Pressure
  • Pressure Units
  • psf – Pounds per Square Foot Pressure Unit
  • psi – Pounds per Square Inch Pressure Unit
  • Specific Gravity
  • Torr Pressure Unit
  • tsf – Tons per Square Foot (USA, Short) Pressure Unit
  • tsi – Tons per Square Inch (UK, Long) Pressure Unit
  • tsi – Tons per Square Inch (USA, Short) Pressure Unit
  • Water Density
  • µHg – Micron of Mercury at 0 deg C Pressure Unit

Primary Sidebar

Measure & Log Pressure On Your Computer

Measure and record pressure in bar, mbar, psi, MPa, Pa, mH2O, mmHg, atm or kg/cm2 using this USB pressure sensor and logging kit with your computer
Measure and record pressure in bar, mbar, psi, MPa, Pa, mH2O, mmHg, atm or kg/cm2 using this USB Pressure Sensor and Logging Kit with your computer

Product Enquiry

Send us your enquiry for a product associated with this oz/in² – Ounce per Square Inch Pressure Unit page, and get assistance with selecting a product for your application.

Email Your Enquiry

enquiries@sensorsone.com

© 2023 SensorsONE Ltd, all rights reserved

  • Home
  • Products
  • Tools
  • Legal
  • Contact