Free Chess Tools
Free interactive chess tools to help you calculate ratings, train your skills, and discover your chess style. All tools are free, no account required.
Calculators
- Elo Rating Calculator - Calculate your new rating after a win, draw, or loss.
- Win Probability Calculator - See your chances of winning based on rating difference.
Training Tools
- Coordinate Trainer - Master chess coordinates with timed drills.
- Square Color Trainer - Test whether you know if a square is light or dark.
- Chess Rating Test - Estimate your chess rating by solving puzzles.
Quizzes
- Chess Personality Quiz - Discover your chess playing style and personality type.
- Opening Recommender Quiz - Find the perfect opening for your playing style.
Utilities
- Chess Clock - Free chess timer with all standard time controls.
- Board Editor & FEN Viewer - Create, view, and share chess positions.
- Chess Notation Converter - Convert between SAN, UCI, PGN, and FEN formats.
- Chess960 Position Generator - Generate random Fischer Random starting positions.
- Opening of the Day - Learn a new chess opening every day.
About These Tools
All chess tools on Old School Chess are free and built to help you improve. Whether you want to calculate your Elo rating, practice board coordinates, or find your chess personality, Professor Archer has you covered.