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Electric Potential (Voltage) Converter — V, mV, kV, MV

Convert between 6 units of electric potential — volts (V), millivolts (mV), microvolts (μV), kilovolts (kV), megavolts (MV), and gigavolts (GV). Household mains is 120 V (USA) or 230 V (Europe). AA batteries provide 1.5 V; EV battery packs reach 400–800 V. Power transmission lines operate at 110,000–765,000 V to minimise resistive losses. Lightning can reach 1 GV before discharge.

↯Electric potential Converter
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V
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mV
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About the Electric Potential (Voltage) Converter

Electric potential, commonly called voltage, is the work done per unit charge to move a charge between two points in an electric field. The SI unit is the volt (V), defined as one joule per coulomb. Household mains supply is 120 V (USA) or 230 V (Europe); batteries range from 1.5 V (AA cell) to 800 V (EV packs); power transmission lines operate at 110,000–765,000 V to reduce resistive losses over long distances.

Quick facts
  • ›The human nervous system transmits signals at around 70 mV across cell membranes
  • ›A lightning bolt can reach 1 billion volts (1 GV) before discharging
  • ›USB 2.0 delivers 5 V; USB Power Delivery can negotiate up to 48 V for fast charging
  • ›The volt is named after Alessandro Volta, inventor of the first electrochemical battery (1799)
Common uses: Power systems, electronics, electric vehicles, telecommunications, medical equipment
Quick Answer— About this converter▾

Free online Electric Potential (Voltage) Converter — V, mV, kV, MV — instant results

Convert between 6 units of electric potential — volts (V), millivolts (mV), microvolts (μV), kilovolts (kV), megavolts (MV), and gigavolts (GV). Household mains is 120 V (USA) or 230 V (Europe). AA batteries provide 1.5 V; EV battery packs reach 400–800 V. Power transmission lines operate at 110,000–765,000 V to minimise resistive losses. Lightning can reach 1 GV before discharge.

Frequently Asked Questions

What units does the Electric Potential (Voltage) Converter — V, mV, kV, MV support?

The Electric Potential (Voltage) Converter — V, mV, kV, MV supports multiple units with instant conversion. Convert between 6 units of electric potential — volts (V), millivolts (mV), microvolts (μV), kilovolts (kV), megavolts (MV), and gigavolts (GV). Household mains is 120 V (USA) or 230 V (Europe). AA batteries provide 1.5 V; EV battery packs reach 400–800 V. Power transmission lines operate at 110,000–765,000 V to minimise resistive losses. Lightning can reach 1 GV before discharge. All results use SI-validated constants accurate to 8 significant figures.

Is this Electric Potential (Voltage) Converter — V, mV, kV, MV free?

Yes — completely free. No registration, no limits. Works on all devices including mobile.

How accurate is this converter?

Accurate to 8 significant figures using precise mathematical constants validated against international SI standards (NIST and ISO 80000).