Voltage Converter

What is electrical voltage?

Think of voltage as electrical pressure. Just like water pressure pushes water through a pipe, voltage is the force that pushes electrical current through a conductor. Officially, it is the difference in electrical potential energy between two points, measured in Joules per Coulomb. That is why it is often called "potential difference." When you look at a battery, the voltage rating (like 1.5V for AA batteries or 12V for a car battery) tells you how much energy can be discharged per charge carrier.

Metric prefixes: From microvolts to megavolts

In electronics and engineering, we work with widely different scales of potential. The Volt (V) is the standard anchor. When analyzing biological signals like brainwaves (EEG) or heartbeats (ECG), we measure in microvolts (µV)or millivolts (mV) because these signals are incredibly small. On the other hand, the distribution grid that carries electricity over mountains and across cities runs at high potentials, measured in kilovolts (kV) or megavolts (MV), to reduce energy loss.

Electrostatic and electromagnetic units: Statvolt and Abvolt

Before the international metric system (SI) was standardized, physicists used the CGS (Centimeter-Gram-Second) system. This system split into two different setups for electrical properties: electrostatic units (esu) and electromagnetic units (emu). The statvolt is the esu unit of potential, which equals roughly 299.79 volts. It is based on the work needed to move a charge against an electrostatic force. The abvolt is the emu unit, which is tiny—equal to exactly one hundred-millionth (10^-8) of a volt. While they are rarely used in modern consumer electronics, having a converter that handles them is essential for retrofitting old equations or doing theoretical research in astrophysics and magnetics.