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Ampere Per Square Inch (A/in²) is a unit in the category of Electric current density. It is also known as amperes per square inch, ampere/square inch. This unit is commonly used in the mixed unit system. Ampere Per Square Inch (A/in²) has a dimension of L^-2I where L is length, and I is electric current. It can be converted to the corresponding standard SI unit A/m² by multiplying its value by a factor of 1555.00031.

Note that the seven base dimensions are M (Mass), L (Length), T (Time), Q (Temperature), N (Aamount of Substance), I (Electric Current), and J (Luminous Intensity).

Other units in the category of Electric current density include Abampere Per Square Centimeter (aA/cm²), Ampere Per Square Centimeter (A/cm²), Ampere Per Square Decimeter (A/dm²), Ampere Per Square Foot (A/ft²), Ampere Per Square Meter (A/m²), Coulomb Per Second Per Square Meter (C/s-m²), and Milliampere Per Square Centimeter (mA/cm²).