Sudoku
Play unlimited free Sudoku puzzles with pencil-free checking, hints and three difficulty levels.
100% free No signup Private & offline-ready Works in your browser
About Sudoku
Fill the 9×9 grid so every row, every column and every 3×3 box contains the digits 1 to 9 exactly once. Each puzzle is freshly generated with a single unique solution. Tap a cell and use the number pad or your keyboard; use Check to find mistakes and Hint when you are stuck.
Frequently asked questions
Is Sudoku free?
Yes. Sudoku on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.
Are my files or data uploaded to a server?
No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.
Does it work on mobile?
Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.