Clear numbers.
Visible assumptions.

WattWorth is a free collection of home electricity calculators and educational guides. The goal is to make everyday running costs easier to understand.

How our tools work

Calculations run in your browser. We multiply power by operating time to estimate energy use, then multiply by your electricity rate. Each tool shows its assumptions and explains where a simple estimate may differ from your bill.

Our editorial approach

Example wattages and rates are clearly labeled as illustrations. We link to primary energy education sources, show worked examples, and avoid claiming product testing or professional credentials. The content was prepared with AI assistance and is not a substitute for your appliance documentation.

Funding

No advertising or affiliate tracking is active in this version. If advertising is introduced, placements will be labeled and privacy information updated.

Found an issue?

Check the displayed formula against your inputs and the linked source material. For corrections and questions, email founder@masterengine.ai.