Convert pound/square inch [gauge] to decibar


psig
decibar

The above form works if you are measuring differential pressure, such as the difference in psi between two points.

If you are measuring relative to vacuum and want to resolve the pressure relative to the atmosphere, then you should use the form below.

Note that psig can measure differential pressure in some applications and absolute pressure in others, so you need to know which one fits your calculation.

psig (relative to atmosphere)
decibar (relative to vacuum)



More information from the unit converter

How many psig in 1 decibar? The answer is 1.4503773800722. We assume you are converting between pound/square inch [gauge] and decibar. You can view more details on each measurement unit: psig or decibar The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00014503773800722 psig, 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!



Quick conversion chart of psig to decibar

1 psig to decibar = 0.68948 decibar

5 psig to decibar = 3.44738 decibar

10 psig to decibar = 6.89476 decibar

20 psig to decibar = 13.78951 decibar

30 psig to decibar = 20.68427 decibar

40 psig to decibar = 27.57903 decibar

50 psig to decibar = 34.47379 decibar

75 psig to decibar = 51.71068 decibar

100 psig to decibar = 68.94757 decibar


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You can do the reverse unit conversion from decibar to psig, or enter any two units below:

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Common pressure conversions


Definition: Pound/square inch

Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. By contrast, psia measures pressure relative to a vacuum (such as that in space). At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.


Definition: Decibar

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.


Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!