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.
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.
- ›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)
Volt to Millivolt — Conversion Table
| Volt (V) | Millivolt (mV) |
|---|---|
| 1 V | 1,000 mV |
| 2 V | 2,000 mV |
| 5 V | 5,000 mV |
| 10 V | 10,000 mV |
| 20 V | 20,000 mV |
| 50 V | 50,000 mV |
| 100 V | 100,000 mV |
| 1,000 V | 1,000,000 mV |
Last updated: August 17, 2026 · Calculated using SI-validated constants (NIST)
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).