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Multiple conversions
To convert from Megavolt (MV) to Volt (V), use the following formula:
Volt (V)
= 106× Megavolt (MV)
To convert from Megavolt (MV) to Microvolt (μV), use the following formula:
Microvolt (μV)
= 106 × 106× Megavolt (MV)
= 1012× Megavolt (MV)
To convert from Megavolt (MV) to Millivolt (mV), use the following formula:
Millivolt (mV)
= 106 × 1000× Megavolt (MV)
= 109× Megavolt (MV)
To convert from Megavolt (MV) to Kilovolt (kV), use the following formula:
Kilovolt (kV)
= 106 × 11000× Megavolt (MV)
= 1000× Megavolt (MV)
A megavolt (MV) is a unit used to measure electrical potential, or voltage.
As a part of the International System of Units (SI), its official symbol is MV. The prefix "mega" means one million, so one megavolt is equal to a staggering one million volts (106 V).
To put the immense power of a megavolt into perspective, consider the standard electrical outlet in your home, which is typically 120 volts (in the US) or 240 volts (in many other parts of the world).
A single megavolt is over 8,000 times more powerful than a US household outlet!
This extremely high voltage is far beyond what we encounter in everyday life and is reserved for specialized industrial and natural phenomena.
Due to this immense power, voltages in the megavolt range are incredibly dangerous and require extensive safety measures and insulation.
You won't find megavolts in your home electronics.
Still, they are crucial in several high-power applications and are often found in nature.
High-Voltage Power Lines: Long-distance power transmission lines often operate at hundreds of thousands of volts (approaching the megavolt scale) to transmit electricity efficiently across countries.
Scientific Research: Particle accelerators, like those at CERN, use multiple megavolts to propel subatomic particles at nearly the speed of light for physics experiments.
Lightning Strikes: Nature's most dramatic electrical event, a lightning bolt, can generate an electrical potential of 100 megavolts or more, releasing a massive amount of energy in an instant.
The only place megavolts appear as a routine engineering figure rather than a natural extreme is long-distance power transmission.
The reason is loss. Power delivered equals voltage times current, so carrying the same power at a higher voltage means a proportionally lower current — and resistive loss in a conductor scales with the square of that current. Doubling the transmission voltage cuts the line loss to a quarter. Over a thousand kilometres, that difference decides whether a project is viable at all.
Systems that have crossed into megavolt territory include:
At these levels the air itself becomes part of the engineering problem. Conductors are bundled rather than single, insulator strings run metres long, and corona discharge — the audible crackle and faint glow as air ionises near the conductor — becomes a measurable loss mechanism and a source of radio interference.
Outside the grid, megavolt potentials are built deliberately in research equipment.
Van de Graaff generators and Cockcroft–Walton multipliers were the first machines to reach the megavolt range, and they are still used to inject charged particles into larger accelerators. Impulse generators used to type-test high-voltage equipment produce megavolt spikes on purpose, simulating a lightning strike so that insulation can be qualified against it.