Swiss Round Calculator

When to use?

Run a fair tournament (board games, card games, chess) where all participants play multiple rounds without elimination.

How to use

• Enter player names, one per line.
• Start the tournament — Round 1 pairings are auto-generated.
• Select winners for each match and advance to the next round.

Input Explanation

Enter each participant's name on a separate line.

Calculation Basis

Applies the Swiss-system algorithm: participants are ranked by score, and each round pairs players with similar scores who have not faced each other before.

Usage Examples

• Board game tournaments - Run a no-elimination event where everyone plays a set number of rounds.
• Chess tournaments - Use Swiss pairing to match players of similar skill.

Examples

• Enter 8 players for a board game night — the system auto-generates 3 balanced rounds
• Run a 16-player chess event — the system handles odd-player byes and OMW% tiebreakers automatically

Cautions

• For official competitions, always verify pairings with a certified tournament director as this tool is intended for casual use only.

FAQ

How many rounds?

Typically ceil(log₂(N)) rounds: 3 for 8 players, 4 for 16.

Odd number of players?

One player receives a bye (automatic win) each round.

Tiebreaker?

Opponent Match Win % (OMW%) is used to break ties.

Related Tools

• Random Team Generator - Shuffle a participant list and split by team count or members per team.
• Ladder Game - Enter participants and result items to connect them randomly.
• Spin Wheel Picker - Pick one item randomly from a candidate list like a spinning wheel.
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• Random Order Shuffler - Shuffle the line order of a list randomly for draws, ordering, and random sorting.
• Dice Roller - Set the number of sides and dice to generate random results and a total.