Convert volts, millivolts and kilovolts: 1 kV = 1,000 V, 1 V = 1,000 mV. Free tool for electricians and technicians — instant in-browser math.
Electrical voltage measures the electric potential difference between two points — in simple terms, the "force" that drives electric current through a circuit. The concept was born from a scientific rivalry at the end of the 18th century: Italian physicist Alessandro Volta disagreed with Luigi Galvani's "animal electricity" theory, and in 1800 built the first electric battery in history to prove that electricity came from contact between different metals, not living tissue. This invention, the "voltaic pile," was the first device capable of generating continuous, stable electric current, and is considered the birth of modern electrochemistry — the direct ancestor of every battery used today, from ordinary batteries to electric vehicle batteries. In Volta's honor, the unit of electrical tension was named after him, officially adopted internationally in 1881. The voltage difference between residential electrical systems is also a real source of practical problems: while Brazil predominantly operates at 127V or 220V depending on the region, countries like the United States use 120V and most of Europe uses 230V — differences that make it essential to check voltage compatibility before using imported appliances. This converter calculates between volts, millivolts, kilovolts, and other tension units, essential for electricians, electronics technicians, electrical engineers, and anyone dealing with technical specifications of international electrical equipment.
1 Volt equals 1,000 millivolts (mV).
1 kV = 1,000 V. Used in transmission lines and high voltage industrial equipment.
Ohm's Law: V = R × I. Voltage in Volts, Resistance in Ohms, Current in Amperes.
Yes, completely free and with no registration required.
Yes, our tool seamlessly handles megaVolts (MV) used in power grids.