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Both calculators run independently — change the inputs on either side to compare results.

Chess Tournament Performance Rating Calculator

Calculate your chess tournament performance rating from your score and opponents' average rating. Use this after any rated tournament to estimate the Elo rating you performed at.

Tournament Score (points)

Total Games Played (games)

Average Opponent Rating

Fill in the required fields to see your result.

Chess

Chess Time Control Equivalency Calculator

Calculates the effective total game duration in minutes for any chess time control given base time, increment, and move count. Use it to compare time pressure across different formats like Blitz, Rapid, or Classical.

Base Time (minutes)

Increment (seconds)

Average Moves Per Game (moves)

Time Usage Rate

Fill in the required fields to see your result.

Key differences

	Chess Tournament Performance Rating Calculator	Chess Time Control Equivalency Calculator
Category	Chess	Chess
Inputs required	3	4
Result	Performance Rating	Effective Game Duration (minutes)
What it does	Calculate your chess tournament performance rating from your score and opponents' average rating. Use this after any rated tournament to estimate the Elo rating you performed at.	Calculates the effective total game duration in minutes for any chess time control given base time, increment, and move count. Use it to compare time pressure across different formats like Blitz, Rapid, or Classical.