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.
Quick Intro: Convert Volts to Amps
To convert volts to amps, you need to divide power (watts) by voltage. This is based on Ohm’s Law, where current equals power divided by voltage (I = P ÷ V). Our online calculator simplifies this conversion for DC and AC systems by factoring in voltage, power, and power factor where applicable.
Formula & Table Summary
🔌 Single-Phase
Formula:
Example: 230V × 10A = 2300 VA
⚡ 3-Phase (Line to Line Voltage)
Formula:
Example: √3 × 400V × 10A ≈ 6928 VA
⚡ 3-Phase (Line to Neutral Voltage)
Formula:
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) |
|---|---|---|
| 2 | 120 | 240 VA |
| 5 | 230 | 1150 VA |
| 8 | 240 | 1920 VA |
| 10 | 110 | 1100 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.
