Pressure Conversion
Use this tool to calculate equivalent pressure values across a variety of measurement units, including bar, pascal (Pa or N/m2), pounds per square inch (psi), millimeters of water column (mm H2O), inches of water column (in H2O), inches of mercury column (in Hg), kilogram-force per square centimeter (kgf/cm2), and pound per square foot (psf).
Pressure Unit Explanations
- A Pascal (Pa N/m2) is a unit of pressure equivalent to one newton per square meter.
- A Bar is equal to 100000 Pa and is slightly less than the average atmospheric pressure on Earth at sea level.
- Kilogram-force per square centimeter (kgf/cm2) is a pressure measure equal to one kilogram-force per square centimeter, another name for this unit is technical atmosphere.
- Inches of Mercury column at 0 degrees Celsius (in Hg @ 0°C) is defined as the pressure exerted by a column of Mercury 1 inch in height, at 0°C, at the standard acceleration of gravity.
- Pound per square inch (psi) is the result from a force of one pound-force applied to an area of one square inch.
- Pound per square foot (psf) is the result from a force of one pound-force applied to an area of one square foot.
- Millimeters of water column at 4 degrees Celsius (mm H2O @ 4°C) is defined as the pressure exerted by a column of water 1 mm in height, at 4°C, at the standard acceleration of gravity.
- Inches of water column at 4 degrees Celsius (in H2O @ 4°C) is defined as the pressure exerted by a column of water 1 inch in height, at 4°C, at the standard acceleration of gravity.
- Atmospheric pressure also called barometric pressure, is the pressure within the atmosphere of Earth.
Pascal
Pa (N/m2)
Kilogram-force per Square Centimeter
kgf/cm2
Inches of Mercury
in Hg
Pound per Square Inch
psi
Pound per Square Foot
psf
Millimeters of Water Column at 4°C
mm H2O
Inches of Water Column at 4°C
in H2O
Atmospheric Pressure
atm
