Convert centimeter mercury (0°C) to centimeter water (4°C)
Please provide values below to convert centimeter mercury (0°C) [cmHg] to centimeter water (4°C) [cmH2O], or Convert centimeter water (4°C) to centimeter mercury (0°C).
How to Convert Centimeter Mercury (0°c) to Centimeter Water (4°c)
1 cmHg = 13.5954742728713 cmH2O
Example: convert 15 cmHg to cmH2O:
15 cmHg = 15 × 13.5954742728713 cmH2O = 203.93211409307 cmH2O
Centimeter Mercury (0°c) to Centimeter Water (4°c) Conversion Table
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Centimeter Mercury (0°c)
Centimeter mercury (0°C) is a unit of pressure measurement representing the pressure exerted by a one-centimeter column of mercury at 0°C.
History/Origin
The centimeter mercury was historically used in barometry and pressure measurements before the adoption of the pascal. It originated from the use of mercury columns in barometers to measure atmospheric pressure, with the unit reflecting the height of the mercury column.
Current Use
Today, the centimeter mercury is largely obsolete and replaced by SI units like the pascal. However, it is still used in some medical and historical contexts to measure blood pressure and atmospheric pressure in certain regions.
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.