Calculate megawatts from volts and amps for DC, single-phase or three-phase AC with power factor, or solve the current or voltage for a given MW.

AC values are RMS. For three-phase AC, enter line-to-line voltage and line current.

Use the measured or specified power factor. Reactive power assumes sinusoidal AC.

Optional settings

Volts To Megawatts Formula

For DC, use P = VI. For sinusoidal single-phase AC, use P = VI × PF. For balanced three-phase AC, use P = √3 × VLL × IL × PF. AC voltage and current are RMS quantities; divide watts by 1,000,000 for megawatts.

DC formula: P (MW) = V (V) × I (A) ÷ 1,000,000.

Variables:

  • P(MW) is the power in megawatts (MW)
  • V(V) is the voltage in volts (V)
  • I(A) is the current in amperes (A)

For DC, multiply volts by amperes and divide by 1,000,000. For AC, also include power factor and, for balanced three-phase systems using line-to-line voltage and line current, √3.

Volts to Megawatts Conversion Table (P = V × I; MW = kV × kA)
Voltage (kV) Current (kA) Power (MW)
0.1200.1000.012
0.2400.1000.024
0.4800.2000.096
0.6000.5000.300
1.0000.5000.500
4.1600.5002.080
6.6000.5003.300
11.0000.5005.500
13.8000.5006.900
22.0000.50011.000
33.0000.50016.500
66.0000.50033.000
110.0001.000110.000
132.0001.000132.000
220.0001.000220.000
275.0001.000275.000
345.0001.000345.000
400.0001.500600.000
500.0002.0001000.000
765.0002.0001530.000
* Rounded to 3 decimals. Uses P = V × I. Shown in engineering units: MW = kV × kA (DC, or single-phase sinusoidal AC at PF = 1; not three-phase).

What is Volts To Megawatts?

Voltage alone cannot be converted to power. This calculator uses voltage, current, system type and AC power factor to estimate real electrical power, or reverse-solves voltage or current. Three-phase calculations assume a balanced sinusoidal system. It does not size equipment or include efficiency losses.

How to Calculate Volts To Megawatts?

Select the value to find and electrical system, then enter the displayed quantities and their units. AC requires power factor; three-phase voltage is line-to-line.

  1. First, determine the voltage in volts (V).
  2. Next, determine the current in amperes (A).
  3. For DC, use P(MW) = V(V) × I(A) / 1,000,000. For single-phase AC include PF; for balanced three-phase AC also include √3.
  4. Select Calculate to see real power, voltage, current and the calculation details.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

voltage (V) = 220

current (A) = 10

For DC, 220 V × 10 A = 2,200 W = 0.0022 MW.