In the field of pressure measurement is used except basic SI unit of pressure - Pascal
, many others. Their conversion is not always trivial and therefore company CRESSTO s.r.o.
offers this tool as a pressure units converter
[ Pa ]
= N/ m² Basic pressure unit
[ hPa ]
= 100 Pa = 100N/ m². is a 100 multiple of basic pressure unit
Pascal. Hectopascal is usually used in meteorology.
[ Bar ]
= 100 000 Pa. The secondary unit of pressure
in SI. The bar is used in industry because approximately corresponds to older pressure unit
of one atmosphere.
[ Atm ]
= kg/cm2 = 98066 Pa. It is obsolete unit of pressure
, not belonging to the system of SI units. This unit is sometimes called a technical atmosphere
. In addition, exist unit called physical atmosphere
, which is equal to the normal barometric pressure at sea level, ie 101 325 Pa.
Kilogram per square centimeter
[ kg/cm² ]
Millimeter of water column
[ mmH2O ]
= 9,8066 Pa. This unit is derived from the practical measurement of very low pressure through the water filled U tubes. mmH2O is still using particularly in the aircondition or in combustion process. We can also meet with the same defined entity, but 1000 times larger - mH2O.
Inch of water column
[ InH2O ]
= 249,1Pa. Similar to previous unit, still widely used in Anglo-American countries.
[ torr ]
= mmHg = 133,32 Pa. Outdated, not allowed unit of pressure
. Derived from the physical implementation of mercury manometers. This unit was used especially in meteorology, where was replaced similar unit - hPa (hectopascal).
Millimeter of mercury column
[ mmHg ]
see Torr. This unit is still used primarily in medicine.
Inch of Mercury column
[ InHg ]
= 3386,4 Pa. - Similar to the previous unit, used in Anglo-American countries.
Pound per square inch
[ PSI ]
= 6894,8 Pa - The most commonly used unit for measuring pressure
in Anglo-American countries.
Pound per square foot
[ PSF ]
= 47,881 Pa - Rarely used unit for measuring low pressures.
Interesting links about pressure measurement
Pressure measurement Wiki
Understanding Pressure and Pressure Measurement Freescale
Other unit converters