Convert centimeter water (4°C) to bar
Please provide values below to convert centimeter water (4°C) [cmH2O] to bar [bar], or Convert bar to centimeter water (4°C).
How to Convert Centimeter Water (4°c) to Bar
1 cmH2O = 0.000980638 bar
Example: convert 15 cmH2O to bar:
15 cmH2O = 15 × 0.000980638 bar = 0.01470957 bar
Centimeter Water (4°c) to Bar Conversion Table
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Centimeter Water (4°c)
Centimeter water (4°C), symbol cmH2O, is a unit of pressure representing the pressure exerted by a one-centimeter column of water at 4 degrees Celsius.
History/Origin
The centimeter water was developed as a practical unit of pressure measurement in medical and engineering contexts, especially for low-pressure measurements such as respiratory and fluid pressure, originating from the use of water columns in manometers.
Current Use
It is primarily used in medical settings to measure intracranial pressure, respiratory pressures, and other low-pressure applications where precise measurement of small pressure differences is required.
Bar
The bar is a unit of pressure equal to 100,000 pascals, roughly the atmospheric pressure at sea level.
History/Origin
The bar was introduced in 1909 by the British engineering community as a convenient unit for measuring pressure, especially in meteorology and engineering contexts.
Current Use
The bar is widely used in meteorology, engineering, and industrial applications to measure pressure, although the pascal is the SI base unit. It is also common in tire pressure measurements and other pressure-related fields.