Meld Calculator

Mahjong Hand Han Calculator

Use this calculator to estimate the "Han" value of your Mahjong hand. Han are fundamental scoring units that determine the base points of a winning hand. This calculator focuses on common Han-contributing elements, providing a simplified way to understand your hand's potential.

4)this.value='4′; if(parseInt(this.value)

Sets of three consecutive tiles of the same suit (e.g., 3-4-5 of Characters). Typically 0 Han on their own.

4)this.value='4′; if(parseInt(this.value)

Sets of three identical tiles (e.g., three 5s of Dots). Typically 0 Han on their own.

4)this.value='4′; if(parseInt(this.value)

Sets of four identical tiles. Typically 0 Han on their own.

3)this.value='3′; if(parseInt(this.value)

Each Pung or Kong of Red, Green, or White Dragons contributes 1 Han.

2)this.value='2′; if(parseInt(this.value)

Each Pung or Kong of your Seat Wind or the Round Wind contributes 1 Han.

8)this.value='8′; if(parseInt(this.value)

Each Flower or Season tile in your hand contributes 1 Han (ruleset dependent).

If you drew the winning tile yourself, this typically adds 1 Han.

If you declared Riichi before winning, this adds 1 Han.

13)this.value='13'; if(parseInt(this.value)

Each Dora tile in your winning hand adds 1 Han.

4)this.value='4′; if(parseInt(this.value)

Each Red Dora tile (often specific 5s) in your winning hand adds 1 Han.

Calculated Total Han: " + totalHan + "

Note: This is a simplified calculation of Han based on common elements and does not account for all complex Yaku (scoring patterns) or Fu calculations in Mahjong.

Understanding Mahjong Hand Scoring: The Role of Han and Melds

Mahjong is a complex and strategic tile-based game originating from China, enjoyed by millions worldwide. While the basic goal is to form a winning hand of four melds and a pair, the scoring system can be intricate, varying significantly between different rulesets like Japanese Riichi, Chinese Official, or American Mahjong. This calculator focuses on a core concept in many Mahjong variants: Han.

What are Han?

In many Mahjong scoring systems, particularly Japanese Riichi Mahjong, "Han" are fundamental scoring units that determine the base value of a winning hand. The more Han a hand accumulates, the higher its score. Han are awarded for specific patterns (known as Yaku), special conditions, and bonus tiles. A hand typically needs at least 1 Han to be considered a winning hand (except in certain rare circumstances or specific rulesets).

The Components of a Mahjong Hand and Their Han Contribution

A standard winning Mahjong hand consists of four "melds" and one "pair" (also known as the "eyes"). Melds are sets of tiles, and their type, along with other factors, contributes to the hand's Han value:

• Chow (順子 – Shuntsu): A sequence of three consecutive tiles of the same suit (e.g., 3-4-5 of Bamboo). While essential for forming a hand, a basic Chow itself typically does not award Han unless it's part of a more complex Yaku.
• Pung (刻子 – Koutsu): A set of three identical tiles (e.g., three 7s of Characters). Like Chows, basic Pungs usually don't award Han on their own, but specific Pungs (like those of Dragons or prevailing Winds) do.
• Kong (槓子 – Kantsu): A set of four identical tiles. A Kong functions similarly to a Pung but uses four tiles.
• Pair (雀頭 – Jantou): Two identical tiles that complete the hand. A basic pair does not award Han.

Beyond these basic structural components, several other elements directly contribute to a hand's Han value:

• Dragon Pungs/Kongs: A Pung or Kong of any of the three Dragon tiles (Red Dragon, Green Dragon, White Dragon) typically awards 1 Han each.
• Wind Pungs/Kongs (Seat/Round): A Pung or Kong of the player's own Seat Wind or the prevailing Round Wind typically awards 1 Han each.
• Bonus Tiles (Flowers/Seasons): In some rulesets, special Flower or Season tiles are bonus tiles. Each bonus tile in a winning hand often awards 1 Han.
• Self-Drawn Win (Tsumo): If a player draws their own winning tile (Tsumo), it often adds 1 Han to their hand.
• Riichi Declared: In Japanese Riichi Mahjong, declaring Riichi (a ready hand) before winning adds 1 Han.
• Dora Tiles: Dora are indicator tiles that reveal bonus tiles. Each Dora tile present in a winning hand adds 1 Han.
• Red Dora Tiles: Some rulesets include "Red Dora" (e.g., red 5s). These are special Dora tiles that also add 1 Han each.

How to Use the Mahjong Hand Han Calculator

This calculator simplifies the process of tallying Han by allowing you to input the number of various Han-contributing elements in your winning Mahjong hand. Simply enter the counts for each category, check the relevant boxes for conditions like "Self-Drawn Win" or "Riichi Declared," and click "Calculate Total Han."

Example Calculation:

Let's say you have a winning hand with the following:

• 2 Chow Melds
• 1 Pung Meld
• 1 Dragon Pung (e.g., three Red Dragons)
• 1 Seat Wind Pung (e.g., three East Winds, and you are the East player)
• 1 Bonus Tile (e.g., a Flower tile)
• You drew the winning tile yourself (Self-Drawn Win)
• You declared Riichi
• 2 Dora Tiles
• 1 Red Dora Tile

Using the calculator:

• Number of Chow Melds: 2 (0 Han contribution)
• Number of Pung Melds: 1 (0 Han contribution)
• Number of Kong Melds: 0 (0 Han contribution)
• Number of Dragon Pungs/Kongs: 1 (+1 Han)
• Number of Seat/Round Wind Pungs/Kongs: 1 (+1 Han)
• Number of Bonus Tiles: 1 (+1 Han)
• Self-Drawn Win (Tsumo): Checked (+1 Han)
• Riichi Declared: Checked (+1 Han)
• Number of Dora Tiles in Hand: 2 (+2 Han)
• Number of Red Dora Tiles in Hand: 1 (+1 Han)

Total Han: 1 + 1 + 1 + 1 + 1 + 2 + 1 = 8 Han

This calculator provides a quick way to sum up the Han from these common elements. Remember that actual Mahjong scoring can involve many more complex Yaku and Fu calculations, which are beyond the scope of this simplified tool. Always refer to your specific ruleset for definitive scoring.