Free chess tools

Free Chess Tools

Handy, no-signup chess utilities that run entirely in your browser.

Nothing to install, nothing tracked — each tool does one thing well and works offline once loaded. Built by ChessTrophies, where you can play everything you calculate here for real.

ELO Rating Calculator

Expected score, points gained or lost, and your new rating from any matchup and K-factor.

FEN Board Viewer

Paste a FEN string to draw the position on a walnut board, with side to move and castling rights.

Play free on ChessTrophies

Put the numbers to work: play ranked chess and checkers, climb the ELO ladder, and earn trophies — free, in your browser.

Play free on ChessTrophies