›› Convert pound/square inch [gauge] to bar


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)
bar (relative to vacuum)

›› More information from the unit converter

How many psig in 1 bar? The answer is 14.503773800722.
We assume you are converting between pound/square inch [gauge] and bar.
You can view more details on each measurement unit:
psig or bar
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00014503773800722 psig, or 1.0E-5 bar.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between pounds/square inch and bars.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of psig to bar

1 psig to bar = 0.06895 bar

10 psig to bar = 0.68948 bar

20 psig to bar = 1.37895 bar

30 psig to bar = 2.06843 bar

40 psig to bar = 2.7579 bar

50 psig to bar = 3.44738 bar

100 psig to bar = 6.89476 bar

200 psig to bar = 13.78951 bar

›› Want other units?

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

Enter two units to convert


›› Common pressure conversions

psig to centibar
psig to gigabar
psig to nanobar
psig to dekapascal
psig to dyne/square centimeter
psig to centipascal
psig to pound/square foot
psig to millipascal
psig to centimeter mercury
psig to centitorr

›› 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: Bar

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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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, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!