Han
Each yaku is worth a number of han, and each dora adds one. A hand with riichi, tsumo and one dora has three han. Han increase value very quickly: each extra han roughly doubles the payment until the limit categories are reached.
Fu
Fu reflect the hand's structure. Every winning hand starts with 20 fu. A closed hand winning on a discard adds 10; a self-draw adds 2 (except with pinfu). Triplets add fu — more for terminals and honours, more for concealed sets and much more for kongs. A pair of dragons or of your own or the round wind adds 2, and difficult waits (closed, edge or single) add 2. The total is rounded up to the next 10. Seven pairs is fixed at 25 fu.
From han and fu to points
The base value is fu × 2^(2 + han). A non-dealer winning on a discard receives four times this base from the discarder; a dealer receives six times. On a self-draw, payments are split among the other players. Results are rounded up to the next 100. Most players use a printed table rather than calculating.
Limit hands
Once a hand reaches five han — or four han with enough fu — it is a mangan, worth a fixed 8,000 to a non-dealer and 12,000 to a dealer. Higher tiers are haneman (6–7 han), baiman (8–10), sanbaiman (11–12) and yakuman (13 or more, or a yakuman pattern), worth 32,000 for a non-dealer.
