What is Sudoku Printable?

Sudoku Printable is a free online tool that generates unlimited, custom sudoku puzzles in seconds. It offers 19 variants including Standard, Diagonal, Windoku, Odd/Even, Knight, Jigsaw, and more. You can choose difficulty (Easy, Medium, Hard, Evil), grid size (4×4, 6×6, 9×9, 16×16), paper format (A4, Letter, A5, Legal, Tabloid, A3), and font size. Download a clean PDF or print directly — no registration required. Answer keys are included for easy self-checking.

Who it's for

• Teachers and educators — create classroom-ready sudoku worksheets for grades 4–6, with 4×4 and 6×6 grids for young learners aged 5–8.
• Puzzle enthusiasts — explore 19 rule variants like Killer, Samurai, and Diagonal sudoku, with difficulty levels from Easy to Expert.
• Parents and caregivers — print age-appropriate puzzles for kids, with optional answer keys for quick verification.

Key features

19 puzzle variants

Choose from Standard, Diagonal, Windoku, Odd/Even, Knight, Jigsaw, and more. Each variant adds a unique twist — like directional clues or overlapping grids — so experienced solvers can pick a puzzle type that matches their mood.

Customizable settings

Tune grid size (4×4, 6×6, 9×9, or 16×16), difficulty, puzzle count, paper format (A4, Letter, Legal, A5, Tabloid, A3), and font size. A live page preview updates before you export, so you know exactly what lands on paper.

Instant PDF generation

Click Generate to create brand-new, print-ready puzzles. Every set has a guaranteed valid solution. Save the PDF to your device or send puzzles directly to your printer — no registration required.

Answer keys included

Enable the sudoku printable with answers option to include solutions on a separate page. This makes self-checking easy for students, kids, or anyone practicing.

What stands out

“Every set is brand-new with a guaranteed valid solution.”

This means you never get recycled puzzles or broken grids. Each click produces a unique, solvable challenge — whether you need one puzzle or a full sudoku book printable. The tool also offers a blank sudoku printable option for custom puzzles or teaching, plus large print format for improved readability.

Worth checking out if…

You want a fast, free way to generate custom sudoku puzzles for personal use, classroom activities, or daily brain training. The 19 variants and flexible settings make it ideal for both beginners and seasoned solvers. No sign-up, no ads, just clean PDFs ready to print.