How it worksEnter the value printed next to the winning hand on the card, choose how the hand was won, and the calculator shows who pays what. It follows the standard NMJL-style payouts.

How was it won?

Many groups count the hand value in cents, so a 25 hand is worth 25¢. Others just keep points on paper.

The rules behind it

How the hand was wonWho pays what
On a discardThe discarder pays double the value; the other two pay the value
Self-drawnAll three pay double
Jokerless, announcedDouble everything, except Singles and Pairs hands and Quint hands
Wall gameNobody pays

A player whose hand is dead still pays the winner. There is no dealer bonus. The full explanation, with worked examples, is in scoring and payouts.

How do you calculate a Mahjong payout?

Take the value printed next to the winning hand. On a discard, the discarder pays double and the others pay the value. If the winner drew the tile, all three pay double. A Jokerless hand doubles everything, except Singles and Pairs and Quint hands.

Who pays double in American Mahjong?

The player who discarded the winning tile, or all three players if the winner drew it from the wall.