Free Printable Blank Sudoku Grids
Pick a layout, toggle pencil-mark cells, print or save as PDF.
When you'd want a blank sudoku grid
A blank sudoku grid is the simplest tool in the sudoku world. No starting numbers, no difficulty rating, no shortcuts — just the 9×9 frame with its nine 3×3 boxes outlined. People print them for four very different reasons.
First, for practicing techniques. When you're learning a new method (say, hidden pairs or X-wing patterns), a blank grid lets you copy a textbook puzzle by hand and walk through the logic at your own pace, without the timer pressure of a digital interface. The act of physically writing each given number reinforces the pattern in your head.
Second, for copying puzzles from books. Sudoku books and newspaper puzzles are great until you realise you can't write candidates in the margins. A printed blank grid sits next to the book, gives you the room you need to track pencil marks, and leaves the original puzzle clean for your spouse or roommate to solve next.
Third, for teaching. Classrooms and homeschool curricula use blank grids to introduce the rules: row, column, box. Students who fill in the grid by hand learn the structure faster than students who only ever interact with a finished puzzle.
Fourth, for inventing your own. Sudoku puzzle designers — yes, that's a hobby — start with a blank grid, drop in clues by hand, and iterate until the puzzle has a unique solution. A printed grid is the design surface.
Pencil-mark cells vs. plain
Toggle pencil-mark cells on when you want each empty square pre-divided into a 3×3 mini-grid for candidate notation. The dividing lines are thin and grey — they won't compete with your handwritten numbers, but they keep your candidates aligned. Plain cells (the default) suit anyone who prefers writing freely or filling the grid with given numbers when copying a puzzle.
Frequently asked questions
Quick answers about printing sudoku from Sudoku247Online.
- Are these blank grids really free to print?
- Yes — free for personal, classroom, homeschool, and community use. No watermark, no account, no signup. Print as many copies as you want.
- What's the difference between plain and pencil-mark cells?
- Plain cells are completely empty — best for copying a puzzle from a book or writing in givens by hand. Pencil-mark cells are pre-divided into a 3×3 mini-grid inside each square so you can write candidates in fixed positions without crowding.
- Can I get a printable with 2, 4, or 6 grids per page?
- Yes — use the Layout selector above. 1 per page gives you the biggest grid; 6 per page is best for classroom packs or travel.
- What paper size does the generator use?
- A4 (210 × 297 mm) by default in most countries, US Letter (8.5 × 11 in) by default for English-locale users. Switch between them using the Paper selector.
- Can I use these grids to design my own sudoku puzzles?
- Absolutely. Many puzzle designers start with a blank grid, drop clues by hand, then check uniqueness using a solver. Our /solver page accepts any 9×9 grid you've designed.
- Are 6×6 or 4×4 blank grids available?
- Not yet on this page — we're starting with the standard 9×9 Classic grid. 6×6 Mini and 4×4 Kids blank grids are on the roadmap.