Chess Accuracy Calculator - Free Accuracy by Rating

April 8, 2026·6 min read

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accuracy

Check chess accuracy from Chess.com, Lichess, or PGN. Compare your result by rating and see how closely your moves matched Stockfish.

What Chess Accuracy Means

Chess accuracy estimates how closely your moves follow the engine line. A higher score means you stayed closer to the best moves throughout the game.

The number is most useful when you compare it against your own rating, your time control, and your previous games. A 78 percent game can be excellent for one player and disappointing for another.

Good Chess Accuracy by Rating

Use these ranges as a baseline, not as a strict rule:

Rating range	Typical accuracy	What it usually means
Under 800	50-60%	Many blunders are normal while basic patterns are still forming.
800-1200	60-70%	Major mistakes start dropping, but tactical misses are still common.
1200-1600	70-80%	More stable play with fewer large evaluation swings.
1600-2000	80-88%	Good positional play and cleaner conversion in simpler positions.
2000-2400	85-92%	Strong precision with fewer unforced errors.
2400+	90-98%	Master-level accuracy with only small losses in hard positions.

Time pressure, sharp openings, and winning or defending difficult endgames can move these numbers up or down.

What Changes Your Accuracy

Time control — Bullet and blitz usually produce lower accuracy than rapid or classical because you simply have less time to calculate.
Position type — Wild tactical positions punish one inaccurate move much harder than calm endgames.
Game state — Winning positions can still lead to low accuracy if the engine sees cleaner conversions than the moves you chose.
Opponent pressure — Strong opposition creates more practical mistakes even when the position is theoretically holdable.

How the Accuracy Calculation Works

chess.rodeo uses engine evaluations rather than a simple blunder count:

Stockfish evaluates each position and the best available move.
Your played move is compared to that engine recommendation.
The evaluation loss is converted into win-probability loss.
Those losses are aggregated into a final accuracy score for the game.

Chess.com, Lichess, and chess.rodeo

Different platforms calculate accuracy differently. Chess.com uses CAPS, while chess.rodeo follows the Lichess-style win-probability approach.

That means the exact percentage may differ across sites, but the trend still matters. Track your games on the same platform if you want a stable measure of improvement.

Related Analysis Tools

Free Chess Analysis — Compare unlimited analysis on chess.rodeo with Chess.com and Lichess.
PGN Analyzer — Upload PGN files and review full games move by move with Stockfish.
FEN Analyzer — Analyze a specific position when you care about one critical moment.

FAQ

What is a good chess accuracy percentage?▼

It depends on rating and time control. Beginners often land around 55-65 percent, club players around 70-80 percent, and masters often stay above 90 percent.

Is 90 percent accuracy good in chess?▼

Yes. A 90 percent game is usually very clean and often corresponds to strong advanced or master-level play, especially outside of simple one-sided games.

Why is my accuracy lower in blitz or bullet?▼

Faster games create more time-pressure mistakes. Even strong players lose accuracy when they have to move quickly.

Can I check accuracy for Chess.com and Lichess games here?▼

Yes. You can import games from Chess.com, Lichess, or PGN files and review the resulting accuracy score for each game.

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