Learn riichi mahjong with tools you can actually use
Mahjong Study Club is a Chinese-language riichi mahjong school with a full structured course, three trainers and a set of free browser calculators. This English section gives you the parts that work without reading Chinese: the calculators, the trainers, and a plain-English map of everything else.
Free tools β no account, no upload
Points calculator
Han + fu + dealer/non-dealer + ron/tsumo β exact payment, with the tsumo split spelled out (what the dealer pays vs. each non-dealer).
Open the calculator βPoints lookup table
1-4 han Γ 20-110 fu, plus the fixed tiers from mangan to yakuman. Generated live from the same scoring engine, so it can never disagree with the calculator.
See the table βTenpai & tile-efficiency analyzer
Paste a 13-tile hand and get shanten, wait shape, and which tiles improve it.
Interface is in Chinese; the tile notation is standard
(123m 456p 789s 11z).
Play a full hand vs. bots
A complete East-round game against three bots in the browser: real dice and wall, calls, opponents that actually compute shanten, and a per-decision score.
Start a game βWhat is readable without Chinese
| Section | Language | What it is |
|---|---|---|
| Free calculators | English | Points calculator and points table; the hand analyzer is Chinese-UI but notation-only. |
| Hand-efficiency trainer | Chinese UI | Random 14-tile hands; click a tile to discard and get instant feedback plus the optimal discard. |
| Three-in-one drills | Chinese UI | Tile efficiency / wait recognition / scoring, with a mistake log and a daily question. |
| Full game vs. bots | Chinese UI | A real East-round game; the score panel can export a shareable result image. |
| Anomaly probability lab | Chinese text | Using probability to spot rigged games β the quantitative half of the anti-cheat section. |
| The 20-lesson course | Chinese text | Beginner β advanced, eight stages, from tile shapes to endgame push/fold. |
What is free and what is paid
Every calculator and every trainer on this site is free and runs entirely in your browser β there is no server, no account, and nothing you type is transmitted anywhere. The paid part is the structured course and personal hand-review.
- Free, forever: points calculator, points table, hand-efficiency trainer, three-in-one drills, full game vs. bots, progress centre with export/import.
- Paid: the eight-stage course, the full graded question bank, the anti-cheat handbook, and 1-on-1 hand reviews. See pricing.
Why this exists
Free mahjong videos tell you what the right play is. They do not tell you which mistake you keep making. Every trainer here records what you got wrong, and the drills are generated from your own mistakes β that is the whole design idea. It is also why the mistake log lives in your browser instead of on a server: your progress is yours, and you can export it as a file or a transfer link and move it to another device.
Questions
Short answers on the FAQ page, or email support@majiangjiaoxue.com.