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1 Pound per Square Inch =

68.947573 Millibars

(rounded to 8 digits)

A pound per square inch, or psi, is a unit of pressure equal to the weight of one pound at sea level over an area of one square inch.

A millibar is a unit of pressure equal to 1/1000^{th} of a bar, or 100 pascals. Barometric pressure readings are often given in millibars.