Voltage Converter
Convert between volts, millivolts, microvolts, kilovolts, megavolts, abvolts, statvolts, and more instantly.
Result
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All conversions
What is Voltage Converter?
A voltage converter lets you switch between units of electric potential difference. The SI unit is the volt (V). Millivolts and microvolts appear in sensor and biomedical measurements; kilovolts in power transmission; megavolts in lightning and high-voltage physics. The abvolt and statvolt are CGS units still encountered in classical electromagnetism.
How to use
- 1 Enter the voltage value in the Value field.
- 2 Select the unit you are converting from in the From dropdown.
- 3 Select the unit you want to convert to in the To dropdown.
- 4 The result and a full table of all equivalent voltages appear instantly.
- 5 Click the swap button to reverse the conversion.
Formula
Example calculation
A typical AA battery is 1.5 V = 1500 mV = 1,500,000 µV. To convert 1.5 V to statvolts: 1.5 × 0.003336 = 0.005004 statV (approximately).
Frequently asked questions
What is the difference between voltage and EMF?
Electromotive force (EMF) is the energy per unit charge supplied by a source like a battery, measured in volts. Voltage (potential difference) is the energy per unit charge between two points in a circuit. They share the same unit but differ conceptually.
How many volts is household electricity?
In the US and Canada, standard household voltage is 120 V at 60 Hz. In Europe, Australia, and most of the world it is 230 V at 50 Hz. High-voltage appliances like dryers and ovens in the US use 240 V.
What is a microvolt used for?
Microvolts (µV) are used in biomedical instrumentation. An ECG (electrocardiogram) signal is typically 1–5 mV peak-to-peak; EEG (brain waves) are just 10–100 µV, requiring very sensitive amplifiers.
What is a statvolt?
The statvolt is the CGS-Gaussian unit of electric potential, equal to approximately 299.792 V. It arises naturally from the CGS system where the speed of light appears directly in electromagnetic equations.
What voltage is used in power transmission lines?
High-voltage transmission lines operate at 115 kV to 765 kV to minimise resistive losses over long distances. Voltage is stepped down at substations — first to distribution voltage (~10–35 kV), then to household voltage (120–240 V).