Free chess tools
Professional utilities for players, coaches and tournament organizers. Free to use, no account required. Sign in to save your work across devices.
Game Report
Grade every move of your recent Lichess or Chess.com games and get a shareable report.
- Pulls your last games from Lichess or Chess.com
- Move grades, accuracy by phase, letter grade
- Critical positions with the engine's better move
- Shareable link; print or save as PDF
Tournament Manager
Swiss and round-robin pairings, live standings, crosstable and a shareable results page.
- Swiss (Dutch-style) and round-robin pairings
- Buchholz, Sonneborn-Berger and more tie-breaks
- Live shareable results page and CSV export
- Saved to your account or this browser
Rating Toolkit
Elo rating change, performance rating, score planner and a saved rating history.
- FIDE formula with the 400-point cap
- Planner: the score you need to hit a target
- Performance rating from the FIDE table
- Rating history chart saved to your account
PGN Studio
Merge, clean, filter, validate and analyse PGN files, and keep collections in your account.
- Real move validation, errors reported
- Strip comments, clocks, variations and NAGs
- Filter, de-duplicate, sort; export PGN, CSV, FEN list
- Opening and player statistics
Chess Clock
Multi-stage time controls, Fischer, Bronstein, delay and hourglass. Works offline.
- FIDE-style multi-stage controls (e.g. 40/90+30)
- Fischer, Bronstein, delay and hourglass
- Undo, move log, low-time alerts, sound, fullscreen
- Saved presets; works offline
Diagram Studio
Build positions, add arrows and highlights, then export PNG or share a link.
- Drag-and-drop board editor with FEN validation
- Arrows, highlights, flip and board colours
- PNG export up to 2000px, no watermark
- Shareable link and embed code