Convert Statampere to Ampere (stA to A)

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

An ampere (symbol: A), commonly called an amp, is the SI base unit of electric current. It measures the rate at which electric charge flows through a conductor. Amperes are widely used in electrical engineering, electronics, telecommunications, power generation, and industrial systems to quantify electric current in circuits and electrical equipment.

One ampere is defined as the flow of one coulomb of electric charge per second (1 C/s). This relationship makes the ampere one of the fundamental units of the International System of Units (SI), linking electric current with other electrical quantities such as voltage, resistance, power, and electric charge.

Amperes are commonly used to specify the current drawn by household appliances, electric motors, batteries, generators, electronic devices, and power distribution systems. Understanding current measured in amperes helps engineers, electricians, and consumers select appropriate wiring, circuit protection, and electrical equipment for safe and efficient operation.