Why this bingo generator?
- Secure mode uses CSPRNG (
crypto.getRandomValues) by default. - Generate multiple cards quickly and print with browser print.
- Supports 75-ball, 90-ball, custom items (word bingo), and number ranges.
- Share safely: share URLs are settings-only by default.
How to use (3 steps)
- Choose a mode and set options.
- Click Generate (sample is auto-generated on load).
- Print, copy, download, or share settings-only URL.
Generate
Bingo cards
Choose a mode, set options, generate cards, shuffle the call list, then print or download.
90-ball uses a standard 3×9 ticket with blank cells (15 numbers total).
Print tip: check print preview, and adjust scale/margins if needed.
Cards
Call list
Tips (fairness, printing, and custom items)
Fairness vs reproducibility (RNG setting)
- Secure uses your browser’s cryptographic RNG (
crypto.getRandomValues) for unpredictable shuffles. - Seeded is for reproducible results (same settings + same seed → same cards). It is not meant for security or high-stakes draws.
- If you include the seed (or items) in a share URL, anyone with the link can reproduce what you generated.
Custom items (word bingo) checklist
- Paste one item per line (names, prompts, vocabulary, etc.). Keep them short so they fit when printing.
- For a 5×5 card with a FREE center, you need at least 24 items to fill one card without reuse.
- Generating many cards increases repeats across cards—if you want fewer repeats, increase the item pool or reduce card count.
Printing tips
- Use browser print preview and adjust scale/margins if borders are cut off.
- For big batches, print to PDF first so you can reprint the same set later.
References
Frequently asked questions
How do I make printable bingo cards?
Choose a mode, click Generate, then use Print. For sharing, use Copy URL (settings only by default).
What’s the difference between 75-ball and 90-ball?
75-ball uses a 5×5 grid with fixed column ranges (B/I/N/G/O). 90-ball uses a 3×9 ticket with blank cells and 15 numbers total.
What is the FREE center?
When enabled (odd grids), the center cell becomes FREE so you need one fewer item/number to fill the card.
How do custom (word) bingo items work?
Paste one item per line (words, prompts, names). The generator places them into the grid and builds a call list from your items.
What is seeded mode?
Seeded mode generates the same results when the settings and seed are the same. It is not meant for security.
Are my inputs or cards saved?
No. This tool runs locally in your browser. Inputs and results are not uploaded and are not saved by default.