Mahjong Score Calculator

Track four-player scores using the documented half-discarder payment variant: on a discard win, the discarder pays full value and the other losers pay half.

Use the Mahjong Score Calculator

Players

Add Round

Scoreboard

Player 1
0
Player 2
0
Player 3
0
Player 4
0
# Hand P1 P2 P3 P4
No rounds yet. Add the first round above.

Summary

This calculator implements a simplified four-player Hong Kong-style tracker with an explicitly documented half-discarder payment rule. Enter the winner, win type, fan count, and discarder after each hand to update a running zero-sum scoreboard. Data stays in local browser storage.

How it works

  1. Enter names for all four players (or use the defaults).
  2. After each hand, select the winner and whether it was a self-draw (zimo) or a discard win.
  3. For discard wins, select which player discarded the winning tile.
  4. Enter the base fan value for the hand (minimum 3 fan).
  5. Optionally enable the 1.5x dealer house-rule bonus. Click "Add Round" to record the hand.
  6. The scoreboard updates automatically. Click "Reset" to start a new game.

Use cases

  • Track scores during a home Mahjong session without paper and pencil.
  • Learn this calculator's documented payment variant by seeing how each win type affects each player.
  • Quickly verify how much each player owes after a complex round.
  • Keep a permanent record of a multi-session Mahjong tournament.

Frequently Asked Questions

Last updated: 2026-06-19 · Reviewed by Nham Vu