Volt is the electrical unit of voltage or potential difference (symbol: V).

One Volt is defined as energy consumption of one joule per electric charge of one coulomb.

1V = 1J/C

One volt is equal to current of 1 amp times resistance of 1 ohm:

1V = 1A ⋅ 1Ω

The Volt unit is named after Alessandro Volta, an Italian physicist who invented an electric battery.

name | symbol | conversion | example |
---|---|---|---|

microvolt | μV | 1μV = 10^{-6}V |
V = 30μV |

millivolt | mV | 1mV = 10^{-3}V |
V = 5mV |

volt | V |
- |
V = 10V |

kilovolt | kV | 1kV = 10^{3}V |
V_{ }= 2kV |

megavolt | MV | 1MV = 10^{6}V |
V_{ }= 5MV |

The power in watts (W) is equal to the voltage in volts (V) times the current in amps (A):

watts (W) = volts (V) × amps (A)

The energy in joules (J) is equal to the voltage in volts (V) times the electric charge in coulombs (C):

joules (J) = volts (V) × coulombs (C)

The current in amps (A) is equal to the voltage in volts (V) divided by the resistance in ohms (Ω):

amps (A) = volts (V) / ohms(Ω)

The current in amps (A) is equal to the power in watts (W) divided by the voltage in volts (V):

amps (A) = watts (W) / volts (V)

The energy in electronvolts (eV) is equal to the potential difference or voltage in volts (V) times the electric charge in electron charges (e):

electronvolts (eV) = volts (V) × electron-charge (e)

= volts (V) × 1.602176e-19 coulombs (C)

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- Ampere (A)
- dB-milliwatt (dBm)
- dB-watt (dBW)
- Decibel (dB)
- Farad (F)
- Kilovolt-amp (kVA)
- Kilowatt (kW)
- Kilowatt-hour (kWh)
- Ohm (Ω)
- Volt (V)
- Watt (W)