Fu reference
Complete guide to fu (minipoints) calculation in Riichi Mahjong
Base fu
Every winning hand starts with a base fu value. Special hands have fixed fu values.
| Type | Fu | Description |
|---|---|---|
| Base fu | 20 | All winning hands start with 20 fu |
| Chiitoitsu | 25 | Seven pairs: fixed 25 fu (no additions) |
| Pinfu tsumo | 20 | Pinfu with tsumo: fixed 20 fu (no additions) |
| Open Pinfu shape | 30 | Open hand with a Pinfu shape won by ron: raised to 30 fu (there is no 20 fu ron) |
Win type additions
Additional fu based on how you win.
| Condition | Fu | Description |
|---|---|---|
| Closed-hand ron | +10 | Winning by ron with a closed hand |
| Tsumo | +2 | Winning by self-draw (except Pinfu) |
Triplets and kans
Fu values for triplets (pon) and kans. Values depend on tile type and open/closed status.
| Tile type | Open triplet | Closed triplet | Open kan | Closed kan |
|---|---|---|---|---|
| Simple (2-8) | 2 | 4 | 8 | 16 |
| Terminal/honor | 4 | 8 | 16 | 32 |
Note: Sequences (chi) give 0 fu.
Pair and wait
Additional fu from the pair (head) and wait shape.
| Type | Fu | Description |
|---|---|---|
| Value pair | +2 | Pair of dragons, seat wind, or round wind |
| Double wind pair | +2 / +4 | Pair that is both seat and round wind (WRC, JPML, M-League: 2 fu / Mahjong Soul: 4 fu) |
| Wait (kanchan/penchan/tanki) | +2 | Kanchan (middle wait), Penchan (edge wait), or Tanki (pair wait) |
Rounding rule
The fu total is rounded up to the nearest 10. Chiitoitsu is the exception: it stays at 25 fu.
Example:
Base 20 + Tsumo 2 + Closed triplet 4 = 26 → rounds to 30 fu