Enter a value in any field to convert between all units
Convert between any two voltage units
See the relative magnitude of different voltage units
Note: The meter shows relative magnitude on a logarithmic scale from pV to PV.
Compare different voltage magnitudes across common applications
| Voltage Range | Example Applications |
|---|---|
| 1 pV - 1 nV | Quantum electronics, ultra-sensitive measurements |
| 1 nV - 1 μV | Sensitive scientific instruments, thermal noise |
| 1 μV - 1 mV | Microphone signals, thermocouple outputs |
| 1 mV - 100 mV | Sensor outputs, audio signals |
| 100 mV - 10 V | Batteries, digital electronics, microcontrollers |
| 10 V - 1 kV | Household electronics, automotive systems |
| 1 kV - 100 kV | Industrial equipment, X-ray machines |
| 100 kV - 1 MV | High-voltage transmission, particle accelerators |
| > 1 MV | Lightning strikes, nuclear research |
Voltage is the electric potential difference between two points in a circuit. The SI unit of voltage is the volt (V), which is defined as the potential difference across a conductor when a current of one ampere dissipates one watt of power.
The volt is named after the Italian physicist Alessandro Volta, who invented the first chemical battery. For practical applications, we use various multiples and submultiples of the volt:
To convert between voltage units, you simply multiply or divide by powers of 10:
| From | To | Multiply By |
|---|---|---|
| Volts (V) | Millivolts (mV) | 1,000 |
| Volts (V) | Microvolts (μV) | 1,000,000 |
| Volts (V) | Kilovolts (kV) | 0.001 |
| Millivolts (mV) | Volts (V) | 0.001 |
| Kilovolts (kV) | Volts (V) | 1,000 |
| Megavolts (MV) | Kilovolts (kV) | 1,000 |
To learn more about voltage and electrical concepts, check out these resources: