Free American mahjong tools

Set checker

Check suits, winds, dragons, flowers, jokers and racks. Know exactly what is ready and what is missing.
Charleston trainer

Deal a random hand and pass tiles right, across and left, with blind passes, the vote and the courtesy pass.

Common questions

Are the Mahj Atlas tools free?

Yes. Both tools are free, need no account and run in your browser.

Is there a scoring calculator?

Yes, on our scoring page.

Is there a printable cheat sheet?