# Watts, VA and Power Factor Converter

Convert real and apparent single phase power using the entered power factor.

[Open this tool](https://whatson.pk/va-calculator/)

Category: Solar & Battery

Watts describe real power, while VA describe apparent power. Power factor connects the two in this single phase model.

Enter a valid power factor and RMS voltage, then compare the converted values. Keep three phase and starting conditions outside this worksheet.

## Inputs and controls

* Known power: Watts to VA; VA to watts
* Known power amount (W or VA). Allowed range: 0 to 1000000000
* Power factor (%). Allowed range: 0.01 to 100
* Single phase RMS voltage (V). Allowed range: 0.1 to 1000

## How to use

* Choose known power. Enter known power amount and power factor.

* Enter single phase RMS voltage.

* Select Calculate result. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.


## Why use this tool

The converter helps make a load rating and an equipment rating comparable on an explicit electrical basis.


## Before relying on the result

Current is VA divided by RMS voltage for this single phase model. It does not model harmonics, three phase wiring or a surge rating.


## Tool limitations

Current is VA divided by RMS voltage for this single phase model. It does not model harmonics, three phase wiring or a surge rating.

## Questions

### Does the current include motor starting surge?

No. It is calculated from the entered steady apparent power and voltage.

### What should I check before using Watts, VA and Power Factor Converter?

Check Known power, Known power amount, Power factor and Single phase RMS voltage. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified (UTC): 2026-10-01T18:56:36+00:00

This profile describes the tool. It does not execute it or supply a professional certification.