Lights Out
Classic Lights Out puzzle. Click any cell and it toggles that cell plus its 4 neighbors. The goal is to turn every light off. Sounds simple, but figuring out the right sequence of clicks is genuinely tricky.
0 lights remaining
Click any cell to start the timer
About the Lights Out
The Lights Out on ToolHaven is a free, browser-based tool that helps you classic Lights Out puzzle. Click any cell and it toggles that cell plus its 4 neighbors. The goal is to turn every light off. Sounds simple, but figuring out the right sequence of clicks is genuinely tricky. It runs entirely in your browser, so no data is sent to any server, and no account or signup is required. Whether you are a student, professional, or just someone looking for a quick answer, this tool gives you accurate results in seconds.
How to use the Lights Out
Using this tool is straightforward. Click any cell - it toggles that cell and its 4 neighbors (up, down, left, right). Your goal is to turn ALL 25 lights off. Plan your clicks carefully, since one click affects multiple cells. The timer starts on your first click. Solve it in as few moves as possible. Daily mode gives everyone the same board. Compare your move count with a friend!
Results are updated instantly as you enter values, so there is no need to click a submit button. You can adjust inputs freely and compare different scenarios in real time.
Why use ToolHaven?
ToolHaven offers 178+ free online calculators and tools across categories including Finance, Health, Math, Education, and more. All tools are free to use, require no installation, and work on any device. Your inputs never leave your browser, so your data stays private. The Lights Out is part of our Fun collection. Explore related tools in the sidebar to get more done in one place.
How to use
- Click any cell - it toggles that cell and its 4 neighbors (up, down, left, right).
- Your goal is to turn ALL 25 lights off. Plan your clicks carefully, since one click affects multiple cells.
- The timer starts on your first click. Solve it in as few moves as possible.
- Daily mode gives everyone the same board. Compare your move count with a friend!
Related tools: