AC POWER Calculator


AC power refers to electrical energy that fluctuates in both direction and amplitude, adhering to a sinusoidal waveform pattern. Its defining characteristic is the alternating movement of electrons, which periodically changes direction, typically at a frequency of either 50 or 60 Hertz (Hz), contingent upon the geographic region. Unlike Direct Current (DC) power, which maintains a continuous flow in one direction, AC power exhibits reversals at regular intervals, rendering it suitable for efficient transmission across extensive distances and adaptable for a myriad of applications.

 The primary objective of AC power is to furnish a dependable and effective mechanism for distributing electricity across residential, commercial, industrial, and utility sectors. AC power streamlines the conveyance of electrical energy over lengthy spans with minimal loss, owing to its capacity for seamless voltage adjustment through the utilization of transformers. Furthermore, it facilitates the functioning of an extensive array of electrical devices and machinery, ranging from household appliances to industrial equipment, by delivering energy in a format that is readily convertible and utilizable.

Understanding AC Power:

AC power has several advantages, including:

Efficient transmission: Electric power can efficiently travel over extended distances with minimal energy dissipation owing to its capability for transformation and adjustment in voltage levels.

Easy conversion: Alternating current (AC) power can be readily transformed into direct current (DC) through the utilization of power electronics apparatus such as rectifiers and inverters.

AC Power Electronics Components:

AC power electronic components are engineered to manage the distinct attributes of AC power. These elements encompass several standard components, such as:

Rectifiers: Convert AC power to DC power using diodes or thyristors.

Inverters: Convert DC power to AC power using power electronics devices like MOSFETs or IGBTs.

Transformers: Step up or step down AC voltage levels using electromagnetic induction.

Switch-mode power supplies: Convert AC power to DC power using high-frequency switching devices like MOSFETs or IGBTs.


  • Residential
  • Commercial
  • Industrial 
  • Utilities
  • Renewable Energy
  • Power generation and transmission: Electric power is produced at power facilities and conveyed across extensive distances via high-voltage transmission cables.
  • Power distribution: Electric power is supplied to homes, industrial facilities, and commercial establishments through distribution networks and transformers.
  • Power conversion: Power electronics devices such as rectifiers and inverters are utilized to transform alternating current (AC) power into direct current (DC) power.
  • Motor control: AC power is used to control the speed and direction of motors in applications like industrial automation and HVAC systems.

AC power electronics faces several challenges, including:

Harmonics and distortion: AC power can contain harmonics and distortion, which can affect the performance and efficiency of power electronics devices.

Power quality: AC power quality can be affected by factors like voltage sag, voltage swell, and frequency variation.Safety and reliability: AC power electronics devices must be designed with safety and reliability in mind to ensure safe operation and minimize downtime.


Power electronics for alternating current (AC) is pivotal in contemporary technology, facilitating the effective transfer and transformation of AC power. Grasping the elements, uses, and hurdles of AC power electronics is fundamental in crafting dependable and productive power infrastructures.

online calculator tailored for AC power computations, which can determine circuit current based on several factors such as power factor angle, voltage, and current. Unlike direct current, where electric charge moves in a single direction, alternating current undergoes periodic changes in direction. To utilize this AC current calculator, users must input the power factor angle in degrees, along with voltage and current values in amperes. Additionally, this AC voltage calculator accommodates various units of measurement for the input parameters.

Note : Don’t end with comma ( , )

Select Phase
To Find
Power Factor Angle (θ)
Voltage (V)
Current (I)
Power (P)


For Single Phase

\[P = V * I * cos(θ) \\V = P / I * cos(θ) \\I = P / V * cos (θ)\]

For Three Phase

\[P = \sqrt{3} * V * I * cos (θ) \\V = P / (3 * I * cos(θ)) \\I = P / (3 * V * cos (θ))\]

where :

  • P = Power
  • θ = Power Factor Angle
  • V = Voltage
  • I = Current

Any questions? Drop them here!