Chess-Specific Calculators
Elo Calculator
Time Management
Puzzle Rating
Chess960
Clock Calculator
Elo Rating Change Calculator
Your Current Rating:
Opponent's Rating:
Game Result:
Win
Draw
Loss
K-factor (exposure):
40 (new player)
20 (regular player)
10 (experienced player)
Calculate
Tournament Time Management Calculator
Total Time (minutes):
Number of Moves:
Increment per Move (seconds):
Calculate
Chess Puzzle Rating Estimator
Time to Solve (seconds):
Number of Attempts:
Your Current Rating:
Perceived Difficulty:
Very Easy
Easy
Medium
Hard
Very Hard
Estimate
Chess960 Starting Position Generator
Also known as Fischer Random Chess - bishops must be on opposite colors, king must be between rooks.
Generate Random Position
Blitz/Bullet Clock Calculator
Base Time (minutes):
Increment per Move (seconds):
Average Moves per Game:
Calculate