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| Unit | Symbol | Volts |
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Convert between Volts, Millivolts, Kilovolts, Megavolts, Microvolts, Nanovolts, Gigavolts and more — instantly with step-by-step formulas.
| Unit | Symbol | Volts |
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Voltage (electric potential difference) is the force that pushes electric current through a conductor. Measured in Volts (V), named after Alessandro Volta, it represents energy per unit charge (J/C).
The Volt (V) is the SI unit of voltage. Common sub-units include millivolt (10⁻³ V) for sensors, microvolt (10⁻⁶ V) for biomedical signals, and kilovolt (10³ V) for power transmission.
Nerve impulses: ~70mV, AA battery: 1.5V, phone charger: 5V, car battery: 12V, household: 120–240V, transmission lines: 115kV–765kV, lightning: ~1 billion V.
V = I × R — Voltage equals current (Amperes) times resistance (Ohms). This fundamental law connects voltage, current, and resistance in electrical circuits.