Riichi Mahjong Calc - Japan

Calculate your Riichi Mahjong score quickly and accurately with Japan rules.

【Features】
✓ Calculates score from your hand (tiles, melds, and winning tile)
✓ Displays han, fu, yaku, and full payment breakdown
✓ Shows detailed fu breakdown (mentsu, pair, wait, and winning fu)
✓ Supports all standard yaku
✓ Supports Riichi, Double Riichi, and Ippatsu
✓ Supports Tsumo, Ron, Rinshan, Haitei, Houtei, and Chankan
✓ Dora, Aka Dora, and Ura Dora counting
✓ Handles Kan, Pon, and Chi melds
✓ Dealer and non-dealer payment calculation
✓ Score limits up to Triple Yakuman
✓ Kuitan rule toggle
✓ Available in Japanese and English

【How to use】
1. Select dealer/non-dealer and wind
2. Select Riichi / Ippatsu / special win conditions
3. Enter the number of Kan / Pon / Chi
4. Enter Dora count
5. Select the winning tile
→ Your score and payment are calculated instantly!

Perfect for players learning Japanese Riichi Mahjong or anyone who wants a quick score check at the table.