Reactive Energy Converter

The Reactive Energy Converter is a free online tool that converts reactive energy between volt-ampere-reactive-hours (VArh), kilovolt-ampere-reactive-hours (kVArh), and megavolt-ampere-reactive-hours (MVArh) instantly. No sign-up needed — enter a value, choose your units, and get an accurate result.

What is reactive energy?

Reactive energy is the energy stored and released by inductive and capacitive loads in AC electrical systems, rather than energy that performs useful work. Utility companies often track reactive energy in kVArh on industrial and commercial electricity bills, since excessive reactive power can trigger penalty charges — making accurate unit conversion useful for billing checks and power factor correction.

How to use the Reactive Energy Converter

1. Enter the reactive energy value you want to convert.
2. Select the unit to convert from — VArh, kVArh, or MVArh.
3. Click Calculate to see the equivalent across units.

Key features

• Supports VArh, kVArh and MVArh with precise scaling.
• Useful for electrical billing checks and power factor analysis.
• Instant, accurate two-way conversion.
• Free and works directly in your browser.

Related tools

Also working with electrical units? Try the Reactive Power Converter, Energy Converter, or the Apparent Power Converter.

Frequently asked questions

Is the Reactive Energy Converter free?

Yes, it's completely free with no sign-up required.

How do I convert VArh to kVArh?

Divide the value in VArh by 1,000 to get kVArh, and divide by 1,000,000 for MVArh.

Why do utility bills include reactive energy?

Businesses with large motors or inductive equipment often generate significant reactive energy, and utilities may charge extra for it since it adds load without doing useful work.

How can reactive energy be reduced?

Power factor correction equipment, like capacitor banks, is commonly used in industrial settings to reduce reactive energy and avoid penalty charges.