How many psig in 1 psi?
The answer is 1.

We assume you are converting between **pound/square inch [gauge]** and **pound/square inch**.

You can view more details on each measurement unit:

psig or
psi

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.000145037738007 psig, or 0.000145037738007 psi.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between pounds/square inch and pounds/square inch.

Type in your own numbers in the form to convert the units!

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

I'm feeling lucky, show me some random units.

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.

The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/inē or lbf/inē) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.

**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!