Free Sudoku Generator
Create printable classic 9x9 Sudoku puzzles with answer keys. Use this no-signup Sudoku maker for classrooms, homeschool, travel packets, and quick brain breaks.
Create a Printable Sudoku Puzzle
Choose a difficulty, select how many puzzles you need, then print or save the worksheet from your browser.
1 puzzle, difficulty: Medium, print density: 9 puzzles per page with matching solution pages, page format: Letter
Your Sudoku puzzle will appear here
Pick your settings and generate a puzzle to preview the printable grid and answer key.
A Sudoku generator creates a valid Sudoku puzzle automatically. Choose a difficulty, generate a classic 9x9 grid, then print the puzzle with an answer key for classroom, homeschool, or personal use.
Create a Printable Sudoku Puzzle
Need a quick worksheet without searching through puzzle books or copying grids by hand? Choose Easy, Medium, or Hard, generate a fresh classic 9x9 Sudoku puzzle, and print it with an answer key.
You can make a single puzzle for a short activity or generate a small batch for classroom packets, tutoring, homeschool practice, or family puzzle time.
Choose Difficulty and Generate Answers
Each generated puzzle includes a matching answer key, so you can review the grid before using it in class or sharing it at home.
Easy Sudoku
Easy Sudoku is best for warmups, beginners, and quick brain breaks.
Medium Sudoku
Medium Sudoku gives balanced practice for students or casual solvers who already know the rules.
Hard Sudoku
Hard Sudoku is more challenging and may take longer to solve. Difficulty can feel different from solver to solver.
Difficulty is estimated by algorithmic settings and may vary. Please review each puzzle and answer key before classroom or personal use.
Sudoku Maker Settings
Quantity
Generate 1 to 12 puzzles at a time.
Puzzles & solutions per printed page
The default print density packs up to 9 puzzles on each workbook page and uses the same density for solution pages. Batches of 1, 2, 4, 6, or 9 stay on one workbook page; 12 uses two workbook pages.
Page Format
Use Letter or A4 for browser print.
Include answer key
Add answer keys for checking and lesson prep.
Share link
Copy a seed-based link to reopen the same puzzle settings later.
Classic 9x9 only
This automatic maker does not support manual variants, killer Sudoku, thermos, cages, anti-knight rules, diagonal Sudoku, or publisher workflow tools.
Print Sudoku Worksheets for Classrooms or Home
Teachers can use Sudoku worksheets for early finishers, substitute plans, quiet logic practice, bell ringers, or screen-free brain breaks. Homeschool parents and tutors can choose a difficulty level that fits the learner and print answer keys for easy checking.
For personal, classroom, homeschool, and non-commercial educational use unless separate permission is granted.
How This Sudoku Generator Works
The Sudoku generator creates classic 9x9 number puzzles in your browser. Each puzzle is built from a completed grid, then clues are removed while the tool checks that the puzzle still has one solution.
Your generated Sudoku grids and answer keys are not stored by Word Puzzle World for the v0 Sudoku generator. If you copy a share link, the link may include a seed and settings so the same puzzle can be regenerated.
The tool uses browser print for printing or saving as PDF. It does not create a server-stored PDF file in v0.
Tips for Choosing Easy, Medium, or Hard Sudoku
Use Easy for warmups
Choose Easy when you want a quick warmup, a beginner-friendly puzzle, or a short activity for younger solvers.
Use Medium for regular practice
Choose Medium for regular practice, tutoring sessions, homeschool work, or a balanced printable worksheet.
Use Hard for longer challenges
Choose Hard when you want a longer challenge for confident solvers. If a batch takes too long to generate, try fewer puzzles or a lower difficulty setting.
Sudoku Generator FAQ
Is this Sudoku generator free?
Yes. The v0 Sudoku generator is planned as a free browser-based tool for creating classic 9x9 Sudoku puzzles. No signup is required for basic Sudoku generation.
Can I print the Sudoku puzzle?
Yes. After generating a puzzle, use Print / Save as PDF to open your browser print dialog. From there, you can print the worksheet or save it as a PDF if your browser supports that option.
Does the Sudoku generator include an answer key?
Yes. Each generated puzzle includes an answer key so you can review the solution before using the worksheet.
Can I choose Easy, Medium, or Hard difficulty?
Yes. Choose Easy, Medium, or Hard before generating your puzzle. Difficulty is estimated by algorithmic settings and may vary, so review the puzzle and answer key before classroom or personal use.
Is this the same as a Sudoku maker?
It works as an automatic printable Sudoku maker for classic 9x9 puzzles. It does not currently support manual grid editing, killer Sudoku, thermos, cages, anti-knight rules, diagonal Sudoku, or publisher workflow tools.
Can teachers use these Sudoku worksheets in class?
Yes, the page is intended for personal, classroom, homeschool, and non-commercial educational use. Teachers can print puzzles for quiet activities, warmups, substitute plans, or logic practice.
Are the puzzles validated to have one solution?
Yes. Each generated puzzle is checked with a solution counter before the page shows it as a completed puzzle with one validated solution.
Can I make multiple Sudoku puzzles at once?
Yes. The v0 scope supports generating up to 12 puzzles at a time, with 1, 2, 4, 6, or 9 puzzles per printed page. The same setting controls solution pages. The default print density keeps batches of 1, 2, 4, 6, or 9 on one workbook page; 12 uses two workbook pages.
Can I use the puzzles commercially or in a book?
Not by default. The v0 page is for personal, classroom, homeschool, and non-commercial educational use unless separate permission is granted. Commercial publishing, resale, KDP, Etsy, paid products, or bulk redistribution require separate review and approval.
Do I need to sign up?
No. Basic Sudoku generation does not require signup in v0. The tool runs in your browser and does not store generated Sudoku grids or answer keys on Word Puzzle World servers.