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Last updated: July 21, 2025

Amps to VA Calculator: Convert Current to Apparent Power

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Amps to VA Calculator

A
V
VA

Amps to VA Calculator

Instantly convert electrical current in amps to apparent power in volt-amperes (VA) using voltage and current. Ideal for AC circuit power calculations.

Intro: Convert Amps to VA

Convert amps to volt-amperes (VA) quickly with this calculator. Just enter the electrical current and voltage to find out the apparent power in your AC system.

Formula & Table Summary

🔌 Single-Phase

Formula:

VA = Volts × Amps

Example: 230V × 10A = 2300 VA

⚡ 3-Phase (Line to Line Voltage)

Formula:

VA = √3 × Volts (L-L) × Amps

Example: √3 × 400V × 10A ≈ 6928 VA

⚡ 3-Phase (Line to Neutral Voltage)

Formula:

VA = 3 × Volts (L-N) × Amps

Example: 3 × 230V × 10A = 6900 VA

Amps to VA Calculator Overview

The Amps to VA Calculator helps you convert electrical current (amperes) to apparent power (volt-amperes or VA) by multiplying it with voltage. Useful for AC circuits, this tool simplifies estimating power capacity for electrical devices, UPS systems, and transformers. Enter current and voltage to get instant results.

Sample Amps to Va conversion Table

Current (Amps)Voltage (Volts)Power (VA)
2120240 VA
52301150 VA
82401920 VA
101101100 VA

Frequently Asked Questions - Amps to VA Calculator:

What is VA in electrical terms?

VA stands for volt-ampere, a unit that measures apparent power in an electrical circuit. It’s the product of voltage (V) and current (A).

How do I convert amps to VA?

To convert amps to VA, multiply the current (in amps) by the voltage (in volts). The formula is: VA = Volts × Amps.

Is VA the same as watts?

Not exactly. VA represents apparent power, while watts represent real power. In purely resistive loads, they can be equal (when power factor = 1).

Why use VA instead of watts?

VA accounts for both real and reactive power in AC systems. It's important for sizing transformers, UPS systems, and power supplies.

What is apparent power?

Apparent power is the combination of real power (watts) and reactive power (VAR). It’s measured in volt-amperes (VA).

Do I need the power factor to calculate VA?

No. Power factor is needed when converting VA to watts. But to get VA from amps, you only need current and voltage.

Is this calculator for AC or DC circuits?

This calculator is mainly for AC circuits where apparent power is relevant. In DC circuits, watts = volts × amps, with no reactive power.

Can I use this calculator for 3-phase systems?

This calculator is designed for single-phase systems. For 3-phase systems, use the formula: VA = √3 × Volts × Amps.

What voltage should I enter?

Enter the voltage used by your equipment or supply source. Common values include 120V, 230V, or 240V depending on your region.

Why is VA important when choosing a UPS?

UPS systems are rated in VA. Knowing your total VA requirement helps ensure UPS can handle the full electrical load safely.

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Md. Jony Islam is a highly skilled professional with expertise in electronics, electrical, mechanical, and civil engineering, as well as finance. Specializing intransformer service and maintenance for 33/11kV substations, he ensures reliable and efficient electrical systems. His mechanical engineering skills drive innovative designs, while his financial acumen supports effective project budgeting. With a strong foundation in civil engineering, he contributes to robust infrastructure development. Md. Jony Islam's multidisciplinary approach ensures efficiency, quality, and reliability across all projects.