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How to Convert Units of Pressure
Conversions are performed by using a conversion factor. By knowing the conversion factor, converting between units can become a simple multiplication problem:
S * C = E
Where S is our starting value, C is our conversion factor, and E is our end converted result.
To simply convert from any unit into pascals, for example, from 5 bar, just multiply by the conversion value in the right column in the table below.
5 bar * 100000 [ (Pa) / (bar) ] = 500000 Pa
To convert from Pa into units in the left column divide by the value in the right column or, multiply by the reciprocal, 1/x.
500000 Pa / 100000 [ (Pa) / (bar) ] = 5 bar
To convert among any units in the left column, say from A to B, you can multiply by the factor for A to convert A into Pascals then divide by the factor for B to convert out of Pascals. Or, you can find the single factor you need by dividing the A factor by the B factor.
For example, to convert from bar to pounds per square inch you would multiply by 100000 then divide by 6894.757. Or, multiply by 100000/6894.757 = 14.503774. So, to convert directly from bar to pounds per square inch, you multiply by 14.503774.
