Short answer

This is a free Catan board generator (also called a Catan map generator) for the classic 3–4 player game. Toggle four balance rules, click Shuffle, and copy the URL — the seed is deterministic so anyone who opens the link sees the exact same board.

The fastest Catan board generator on the web

Most Catan board generators stop at "shuffle the tiles." This one lets you tune fairness in four independent ways, ships every board with a permanent shareable link, exports to PNG in one click, and does it all without an account or a database. The whole thing is server-rendered HTML with a tiny JavaScript layer, so it loads fast on mobile, works for AI assistants and crawlers, and uses a fraction of the data of the heavier Catan map maker tools out there.

What you can generate

Classic 3–4 player Catan board — 19 land hexes, 18 number tokens, 1 desert with the robber.
Catan 5–6 player expansion board — 30 land hexes, 28 number tokens, 2 deserts.
Default balanced setup (no red 6/8 adjacency, no 2/12 adjacency, no same-number, no same-resource) or any combination loosened.

Number-token probabilities

Every number token corresponds to a roll of two dice. Higher pip-count tokens (red 6 and 8) hit far more often than the corner tokens (2 and 12). The default rule that 6 and 8 cannot share an edge is what keeps a balanced Catan board from collapsing into a single dominant settlement spot.

Number	Pips (probability dots)	Roll probability	Notes
2	●	2.78%	Lowest output; "dead corner" risk
3	●●	5.56%	Weak
4	●●●	8.33%	Below average
5	●●●●	11.11%	Solid
6	●●●●●	13.89%	Red number
7	—	16.67%	No token; activates the robber
8	●●●●●	13.89%	Red number
9	●●●●	11.11%	Solid
10	●●●	8.33%	Below average
11	●●	5.56%	Weak
12	●	2.78%	Lowest output; "dead corner" risk

Why this beats other Catan map generators

Balanced by default. The official red-number rule is on out of the box; most online tools either ignore it or hide it three menus deep.
Deterministic seeds. Same seed plus same flags always produces the same board. Share the URL and your friends see the exact same map — no syncing, no screenshots.
Server-rendered. Your /board/<seed> URL ships a fully-formed SVG board in the HTML, so it shows up correctly in messaging app previews, search engines, and AI assistants.
Mobile-first. Most game-night decisions happen on a phone. The whole interface is built for portrait viewports first.
No accounts, no database. Boards live in the URL, not on our servers. The only state is your seed.
Free. Two subtle ad slots keep the lights on; everything else is free and unlimited.

Tournament-grade balance presets

If you're looking for the most balanced Catan board possible (e.g. for tournament play, club nights, or competitive house rules), use the defaults: all four "may touch" toggles disabled. This gives you the closest possible distribution to a hand-curated tournament setup. For relaxed casual play, allow same-resource adjacency for a more thematic, continent-like map. For chaotic high-variance games, enable 6/8 adjacency or same-number adjacency.

How to use this Catan board generator

Pick your mode — 3–4 players (this page) or 5–6 expansion.
Open the Rules panel and toggle any constraint you want to loosen.
Hit Shuffle until you get a board you like (each shuffle is instant).
Click Share to copy the URL, or use the native share sheet on mobile.
Click PNG to download the board as an image (great for printing or pinning).

Common questions

What is a Catan map generator?

A Catan map generator (also called a board generator) is a tool that produces a random or balanced Catan starting board for you, instead of laying out the physical tiles by hand. The output is a list of land hexes, number tokens, and ports arranged on the standard hexagonal grid. This site is a free Catan map generator that works in your browser.

Is this a Settlers of Catan board generator?

Yes — Catan was originally published as The Settlers of Catan, and the layout, terrain types (forest/wood, hills/brick, fields/wheat, pasture/sheep, mountains/ore, desert), number tokens, and ports here all match the official Settlers of Catan rules. CATAN® is a trademark of CATAN GmbH; this site is an unofficial fan tool with original placeholder visuals.

How do I get a balanced Catan board?

Use the default rules. Out of the box, the generator enforces three balance rules: no two red numbers (6 and 8) sharing an edge, no two extreme numbers (2 and 12) sharing an edge, and no two identical numbers sharing an edge. That combination produces a fair Catan board where every settlement spot has a real chance.

What's a "red number" in Catan?

The number tokens for 6 and 8 are printed in red because they roll the most often (5 pips each, ~14% probability per roll). The official rule is that two red numbers should never share an edge, because adjacent reds create a "production corner" that can decide the game in the first three rounds.

Can I generate a 5–6 player Catan board?

Yes — switch to 5–6 expansion mode to generate a 30-hex board with the expanded resource and number distribution.

Does the same seed always produce the same Catan board?

Yes. The generator is deterministic — given a seed and a set of rule flags, it produces the exact same board every time. That's how the share URLs work without any database or account.

Is there a Catan board generator app?

This works in any browser, including mobile. Add it to your home screen for an app-like experience without installing anything.

What's the difference between this and a random Catan board?

A purely random Catan board can have two reds touching, two 12s touching, three forests in a row — anything goes. This generator is random, but constrained: by default it produces a balanced random board that obeys the official red-number rule. Loosen any constraint to allow more chaos.