A wordoku maker for kids and adults
Printable PDF in one click
No editor and no account: choose your options and the PDF downloads straight away, in US Letter or A4.
A hidden word in every grid
Each wordoku uses the letters of one word instead of numbers, and one row of the solution spells it.
Your own words
Type names, spelling words or a secret message — 9 different letters for a classic grid, 4 or 6 for kids.
Real sudoku difficulty
Every wordoku is one of our sudoku puzzles with letters instead of numbers — Easy, Medium and Hard mean exactly what they mean in our sudoku, with exactly one solution.
Answer key included
An answer page shows every solved grid with the hidden word highlighted.
Need a whole book?
Wisdom Effect builds complete wordoku books for Amazon KDP: hundreds of puzzles, your own word lists, large print, KDP-safe margins and a commercial license.
How to print wordokus
- 1Choose a classic 9×9 wordoku or a 4×4 or 6×6 grid for kids, and a difficulty.
- 2Use the word list or type your own words.
- 3Keep the answer key on or off and choose US Letter or A4.
- 4Click Download PDF and print it.
Free wordoku generator FAQ
What is a wordoku?
A sudoku with letters instead of numbers. Every letter appears once in each row, column and box — and in these puzzles one row of the solution spells a hidden word.
Is this wordoku generator really free?
Yes. No account, no credit card and no watermark across the puzzles — just a small source line at the bottom of each page.
Can I use my own words?
Yes. Choose My own words and type up to 4 words, one per line. A word needs 9 different letters for a classic grid (4 or 6 for kids) and no letter twice.
Can I make a classic wordoku with the letters A to I?
Yes. Choose Letters A–I (A–D or A–F on the small kids grids): the letters simply replace the numbers 1–9 and there is no hidden word.
Can I print the wordokus for my class or family?
Yes. The free PDFs are for personal and classroom use: print as many copies as you like.
Can I sell these puzzles or publish them on Amazon KDP?
Not the free ones — they are for personal and classroom use only. For books you sell, create a wordoku book in Wisdom Effect: books generated on paid plans and with credit packs come with a full commercial license.
Are there wordokus for kids?
Yes. Choose For kids: 4×4 grids with 4-letter words and 6×6 grids with 6-letter words, with the word row named under the grid.
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Free Word Search Generator
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Free Duplicate Word Remover
Remove duplicate words from any list, strip accents and see how often each word repeated.
Free Word Counter
Count words, characters, sentences and chapters and estimate your book’s page count for KDP.
Free QR Code Generator
Make QR codes for links, text and images — with your colors, logo and a caption, one by one or in bulk.
Free KDP Royalty Calculator
See your royalty per copy on Amazon KDP — printing cost, the 60 % price point, Expanded Distribution and Kindle 35 % vs 70 %.
Free KDP Profit Calculator
Your real KDP profit: royalties minus ads, software and one-time costs — with break-even and the ACoS your ads can afford.
Free KDP Spine Width Calculator
Exact spine width and full cover size with bleed for any KDP paperback — plus a cover template to download.
Free KDP Cover Size Calculator
Cover dimensions for every KDP format — paperback with bleed, hardcover with wrap and hinge, and Kindle eBook.
Want a whole wordoku book?
Generate 100+ wordokus from our word list or your own, each with exactly one solution, with KDP-safe margins. Free trial with 25 credits, no credit card.