How many attobar in 1 pound/square inch [absolute]?
The answer is 6.89475728E+16.
We assume you are converting between attobar and pound/square inch [absolute].
You can view more details on each measurement unit: attobar or
pound/square inch [absolute]
The SI derived unit for pressure is the pascal.
1 pascal is equal to 10000000000000 attobar, or 0.00014503773800722 pound/square inch [absolute].
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between attobars and pounds/square inch.
Type in your own numbers in the form to convert the units!

The SI prefix "atto" represents a factor of
10^{-18}, or in exponential notation, 1E-18.

So 1 attobar = 10^{-18} 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.

Definition: Pound/square inch

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.

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