Free · No sign-up · No watermark
Free printable Sudoku puzzles
Pick a difficulty, how many puzzles go on a page and how many pages you want, then print it or save it as a PDF. Name it, size it for A4 or Letter, and the answers come out on their own sheet at the end so you can hand the puzzles out without them.
Grid size
Difficulty
Puzzles per page
Pages — 2 puzzles
Paper size
Answer key
Sheet title
Choose “Save as PDF” as the destination in the print dialog to keep a copy. Answers print on their own sheet at the end, so you can hand out the puzzles without them.
Printables by level
How many to put on a page
The right number depends less on difficulty than on who is holding the pen. One per page gives you a grid you can write candidates into comfortably, which is what a hard board needs. Two per page is the usual choice and what most people want. Four and six are for easy boards, for printing a stack at once, or for anyone who does not pencil-mark.
If you are printing for someone with less steady handwriting — which is a large share of why people print Sudoku at all — one per page is worth the extra paper.
Printing settings worth checking
Set the print dialog to portrait and turn off headers and footers, which otherwise stamp the page URL and date across the top of the sheet. Scale should be 100% rather than “fit to page”; the layout already accounts for a normal margin. Everything prints black on white, so greyscale or a monochrome printer is fine.
Nothing is uploaded, and there is nothing to sign up for
The puzzles are generated in your browser the moment you open the page, and printing uses your own print dialog. There is no download endpoint, no email wall and no watermark. Hit New sheet as many times as you want — every press is a different set of boards.
Every puzzle has exactly one solution
Cells are removed one at a time and any removal that would leave the grid with two valid answers is put back. That matters more on paper than on screen: there is no undo on a printed sheet, so a puzzle that turns out to have two answers wastes the whole solve. The answer key on the second page is the real solution, not one of several.
Frequently asked questions
Are these printable Sudoku puzzles really free?
Yes. No sign-up, no email, no watermark and no limit. The puzzles are generated in your browser when you open the page, so pressing New sheet gives you a completely different set every time.
How do I save the puzzles as a PDF?
Press Print, then choose 'Save as PDF' as the destination in your print dialog. Every modern operating system offers this, which is why there is no separate download button — your own print dialog does it better than a JavaScript PDF library would.
Do the printouts include answers?
Yes, on their own sheet at the end rather than beside each puzzle, so you can separate them and hand the puzzles out without the answers attached.
How many Sudoku puzzles should I put on one page?
One or two for hard and expert boards, where you will need room for pencil marks. Four or six works for easy puzzles, or when you are printing a batch. If you are printing for someone with less steady handwriting, one per page is worth the extra paper.
What print settings should I use?
Portrait orientation, scale at 100% rather than 'fit to page', and headers and footers turned off so the page URL and date are not stamped across the sheet. Everything prints black on white, so greyscale is fine.
Keep reading
Or play without the printer
The same generator runs a full board in your browser, and Action Sudoku puts a real opponent on it. Free on iOS and Android.