Lights Out Solver
Free lights out solver tool. Instant results, no signup, works from any device. Enter your letters and get every valid word.
Lights Out Solver tool
Click each cell to match your board. Lit cells become orange. The solver shows which cells to press.
Press the 0 cells marked with ✕ above (in any order).
About this tool
Lights Out Solver uses a full English dictionary and finds every valid word that matches your letters and filters. Results are sorted by length (and score, for Scrabble) so the strongest plays land at the top.
Everything runs in your browser. Nothing you type is stored, sent to a server, or used to train anything. The lights out solver works offline once the page loads.
Frequently asked questions
Is the Lights Out Solver free?
Yes. This tool is free, requires no signup, and works from any device with a modern browser.
Does it work offline?
After the first visit the dictionary is cached, so results appear instantly and the tool continues working if your connection drops.
Where does the word list come from?
The tool uses a comprehensive open English dictionary of around 360,000 words. It covers most standard Scrabble and Wordle vocabulary.
Can I use wildcards?
Yes. Enter ? or * in place of a letter to represent a blank tile or an unknown position.