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How many hectopascal in 1 atmosphere?
The answer is 1013.25.
We assume you are converting between hectopascal and atmosphere [standard].
You can view more details on each measurement unit:
hectopascal or atmosphere
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.01 hectopascal, or 9.8692326671601E-6 atmosphere.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between hectopascals and atmospheres.
Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from atmosphere to hectopascal, or enter any two units below:
hectopascal to gigabar
hectopascal to meter of air
hectopascal to kilopond/square millimeter
hectopascal to foot of head
hectopascal to hectobar
hectopascal to femtopascal
hectopascal to yottabar
hectopascal to yoctobar
hectopascal to millimeter water
hectopascal to inch of water
The SI prefix "hecto" represents a factor of 102, or in exponential notation, 1E2.
So 1 hectopascal = 102 pascals.
The definition of a pascal is as follows:
The pascal (symbol Pa) is the SI unit of pressure.It is equivalent to one newton per square metre. The unit is named after Blaise Pascal, the eminent French mathematician, physicist and philosopher.
The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth's atmospheric pressure at sea level.
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