A quick table-side guide

Riichi mahjong calculator

Check a Japanese mahjong hand or enter han and fu to calculate ron and tsumo payments.

Riichi calculator guide

Scoring steps
  1. Enter han and fu, or build the hand with tiles. Fu is ignored at 5 han or more.
  2. Select the winning tile, then choose Ron or Tsumo.
  3. Set the dealer, riichi, and any bonuses or special circumstances.
  4. Check the payment, including honba.
Players