Free Sudoku Generator

This free Sudoku generator creates a new printable Sudoku puzzle instantly. Choose from easy, medium, or hard puzzles, then print your puzzle or create a PDF with optional answer keys.

Each click generates a fresh 9×9 Sudoku grid, so you can make as many different puzzles as you need for classroom activities, early finishers, homeschool lessons, or just for fun. No sign-up required.

How to Use the Sudoku Generator

Choose easy, medium, or hard, then select whether you want 1, 2, or 4 Sudoku puzzles on each page. Click New Puzzle to generate a fresh 9×9 Sudoku grid, or Create PDF to make a printable worksheet.

You can add an answer key before creating the PDF, and each worksheet has a clean black-and-white layout with space for a name. There’s no sign-up, and you can generate as many different Sudoku puzzles as you need.

The generated puzzles are free for personal, classroom, tutoring, and homeschool use. Commercial use is not permitted without written permission.

Sudoku Difficulty Levels

Choose the difficulty based on how challenging you want the puzzle to be:

• Easy Sudoku – more starting numbers, making these a good choice for beginners.
• Medium Sudoku – fewer clues and a more challenging logic puzzle.
• Hard Sudoku – fewer starting numbers for more experienced Sudoku players.

You can generate a new puzzle at any difficulty whenever you want a different grid.

More Free Printable Puzzles

Want more puzzles? These are some of my other free options:

• Word Search Printables for spelling and vocabulary
• Crossword Puzzle Printables for recall and problem-solving
• Word Scramble Worksheets for quick literacy practice
• Scattergories Printables for thinking on the spot
• More printable Sudoku Puzzles if you want extra sets

Last Updated on 27 August 2026 by Clare Brown