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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.
| 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.
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
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
tel: +44 (0)844 800 9440
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