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, and they run entirely in your browser.
Not sure where to start? The three most popular tools are the chess rating test (find your approximate Elo in fifteen minutes), the chess personality quiz (discover which of eight playing styles fits you), and the Elo calculator (see exactly how any result changes your rating).
Calculators
Understand the rating system that governs competitive chess. Calculate rating changes after a game and see the statistical odds behind any matchup.
- Elo Rating Calculator - Calculate your new rating after a win, draw, or loss.
- FIDE Rating Calculator - Tournament rating change, performance rating, and initial rating.
- Win Probability Calculator - See your chances of winning based on rating difference.
Training Tools
Build the foundation skills that every stronger player takes for granted: instant coordinate recall, square-color vision, and an honest measure of your current level.
- Checkmate Pattern Trainer - Find the mate in one across 19 named checkmate patterns.
- Coordinate Trainer - Master chess coordinates with timed drills.
- Notation Trainer - A move appears on the board. Name it in notation.
- 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 is personal. These quizzes match openings and study plans to the way you actually think, instead of the way a textbook assumes you do.
- Chess Personality Quiz - Discover your chess playing style and personality type.
- Opening Recommender Quiz - Find the perfect opening for your playing style.
- Name That Opening - Read the moves, identify the opening, build a streak.
Utilities
The workbench: a tournament-grade clock for over-the-board games, a position editor for study and sharing, converters for every notation format, and daily opening inspiration.
- 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
Every tool on this page was built by the Old School Chess team to solve a real problem our students kept hitting: not knowing their level, not understanding why their rating moved, struggling to read notation, or lacking a decent clock for kitchen-table games. They pair with the coaching side of the site, where Professor Archer turns what the tools measure into a personal training plan.
The tools work on phones, tablets, and desktops, store your streaks and personal bests locally, and never require an account. If one of them helps you, the best thanks is sharing it with your chess club.