How many psia in 1 decibar? The answer is 1.4503773800722. We assume you are converting between pound/square inch [absolute] and decibar. You can view more details on each measurement unit: psia or decibar The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00014503773800722 psia, or 0.0001 decibar. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between pounds/square inch and decibars. Type in your own numbers in the form to convert the units!
1 psia to decibar = 0.68948 decibar
5 psia to decibar = 3.44738 decibar
10 psia to decibar = 6.89476 decibar
20 psia to decibar = 13.78951 decibar
30 psia to decibar = 20.68427 decibar
40 psia to decibar = 27.57903 decibar
50 psia to decibar = 34.47379 decibar
75 psia to decibar = 51.71068 decibar
100 psia to decibar = 68.94757 decibar
You can do the reverse unit conversion from decibar to psia, or enter any two units below:
Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure. Since atmospheric pressure at sea level is around 14.7 psi, this will be added to any pressure reading made in air at sea level.
The SI prefix "deci" represents a factor of 10-1, or in exponential notation, 1E-1.
So 1 decibar = 10-1 bars.
The definition of a bar is as follows:
The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.
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