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US

USCF

Det officiella ratingsystemet för USA:s Schackförbund.

Automatically import your Chess-Results.com tournament games into ELO, FIDE, UKD, USCF, DWZ and other rating calculators. Importera från Chess-Results
Games imported from Chess-Results.com. Review ratings before calculating. Importera från Chess-Results
Unrated player calculation is only available in tournament mode. Switch to tournament mode and enter at least 4 games.
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Om denna kalkylator

This tool provides a simplified ELO-based preliminary calculation for USCF rating changes. The official USCF system may include Glicko-based calculations, bonus points, rating floors, and special rules. The value shown may differ from the official USCF record.

För spelare utan USCF

For players without a USCF rating, the tool calculates an estimated initial rating using results against rated opponents throughout the tournament: R = Opponent Average + ((Wins − Losses) / Games) × 400. This calculation requires at least 4 games. The official starting rating is determined by US Chess rules on valid game count, provisional rating, bonuses, and other evaluation criteria.

Hur USCF-rating fungerar

Förväntad poäng:

E = 1 / (1 + 10^((Rb - Ra) / 400))

Ny rating:

R'a = Ra + K × (S - E)

Simplified K factors: K=32 under 2100, K=24 for 2100–2400, K=16 from 2400. The official USCF system applies different coefficients.

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