Analyze FEN Online (Free)

Forsyth–Edwards Notation (FEN) encodes a chess position as text. With Chess Analyzer Pro, you can paste a FEN and get instant analysis and best moves powered by Stockfish 17.1.

How to analyze a FEN

1. Open Chess Analyzer Pro.
2. Click the FEN tab and paste your FEN string.
3. Load the position and click Analyze.

The engine will display best moves, an evaluation score, and legal moves. You can also switch the active side and flip the board.

Where to get a FEN

• From chess sites’ board editors (e.g., Lichess Editor).
• From game viewers that offer export as FEN.

Try it now and analyze any chess position for free.