offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Sudoku

Solve a classic 9×9 Sudoku by logic alone — no guessing required.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Fill the grid so each row, column, and box contains 1–9 without repeats.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.