Free online chess tools for players and organizers: a fullscreen chess clock and handy tournament calculators. Each one works right in your browser, on any phone or laptop, with no signup. Pick a tool and get going.
A simple two player chess clock with common time controls and increment. Tap to start, tap your side after each move.
Open tool →Paste your player list and get round 1 Swiss pairings, with colours and the bye worked out for you.
Open tool →How many rounds does your tournament need? Type the number of players and get the recommended round count instantly.
Open tool →How long will your tournament take? Enter players and time per game to estimate the rounds and total event time.
Open tool →Two players tied on points? Enter each opponent's final score and get Buchholz, Buchholz Cut-1, Median and Sonneborn-Berger.
Open tool →Everyone plays everyone. Enter your players and get the full schedule, every round and every pairing, with byes worked out.
Open tool →Shuffle the back row for a Fischer Random night. One tap gives a legal position plus its SP number, so every board sets up the same.
Open tool →We are adding more free chess tools. Check back, or run a full tournament with the ChessHost app any time.
These tools are built for fun, everyday chess: a quick game with a friend, a club night, or planning a small tournament. No jargon and no setup, just open and use. When you are ready to run a real event, the ChessHost app takes care of pairings, standings, and results.
Pairings, standings, and results, all done for you. Set it up in minutes.
Start a free tournament