AC Voltage Calculator

Calculate voltage, current, resistance, and power in AC circuits.

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Features

AC Circuit Analysis

Calculate Voltage (V), Current (I), and Impedance (Z) using AC Ohm's Law.

Power Factor Correction

Input Power Factor (0-1) to accurately calculate Real, Apparent, and Reactive power.

Smart Input Detection

Enter any two known values, and the calculator automatically solves for the rest.

Complete Power Triangle

Get a full breakdown of Real Power (W), Apparent Power (VA), and Reactive Power (VAR).

Error Prevention

Validates inputs to ensure physically possible circuit parameters.

Instant Reset

One-click reset to quickly start a new analysis.

About AC Voltage Calculator

Our AC Voltage Calculator is a comprehensive tool designed for electrical engineers, students, and technicians working with Alternating Current (AC) circuits. Unlike simple DC calculators, this tool accounts for the complexities of AC power, including Power Factor (PF), Real Power (P), Apparent Power (S), and Reactive Power (Q). It automatically applies Ohm's Law for AC circuits and power formulas to help you analyze circuit performance, size components correctly, and understand the relationship between voltage, current, and impedance.

How to Use AC Voltage Calculator

  • 1
    Enter Known Values

    Input at least two parameters (e.g., Voltage and Current, or Power and Impedance).

  • 2
    Set Power Factor

    Adjust the Power Factor if known (default is 1.0 for purely resistive loads).

  • 3
    View Results

    Instantly see calculated values including the full power analysis (Real, Apparent, Reactive).

  • 4
    Analyze & Reset

    Review the results for circuit sizing or analysis, then use Reset for a new calculation.

AC Voltage Calculator | AC Circuit Analysis Tool