Convert Statampere to Milliampere (stA to Milliampere)

Statampere (stA) and Milliampere (Milliampere) are both units of current. With the conversion form below, you can effortlessly and accurately convert statampere to milliampere. This free online calculator tool makes it simple and easy to perform the conversion from stA unit to the Milliampere unit.

Electric current is the rate at which electric charge flows through a conductor. It is measured in amperes (A), the SI base unit named after French physicist André-Marie Ampère. One ampere equals one coulomb of charge passing a point per second (1 A = 1 C/s). Current can flow as direct current (DC)—in a single direction—or as alternating current (AC), which periodically reverses direction and powers most homes and businesses worldwide.

A statampere (statA) is a unit of electric current from the CGS electrostatic system. One statampere equals approximately 3.336 × 10^-10 amperes in SI units—significantly smaller than the SI ampere, reflecting the different electromagnetic conventions of the CGS system. The statampere developed as part of Gaussian CGS notation used in theoretical physics, particularly in older classical electromagnetism textbooks. The unit remains in some theoretical physics literature and historical scientific works, but SI units (amperes) are now universally standard in electrical engineering, instrumentation, and contemporary scientific practice. Modern researchers encounter statampere notation primarily when reviewing historical literature or studying classical field theory.

A milliampere (mA) is a unit of electric current equal to one thousandth of an ampere (10^-3 amperes). Milliamperes are standard in electronic circuits, consumer electronics, and biomedical devices. Battery chargers, LED circuits, and medical equipment like TENS units operate at milliampere ranges. The milliampere is practical and widely understood in electronics, appearing on device specifications, user manuals, and equipment labels. Battery capacity is often rated in milliampere-hours (mAh), making the unit familiar to anyone using rechargeable devices.