Meaning of "Performance Rating" w.r.t. ECF rating

[Arnav Sud]

I just returned from the Cotswold Congress 2022 - well done to the organisers for making it a fabulous event!

Quick question - what is the meaning of "Performance Rating" on the Chess-Results website? How does it translate into an ECF rating (if at all)?

Thanks!
Rgds

[IM Jack Rudd]

It is, roughly speaking, the number we would estimate your rating to be if the only information we had was that tournament.

As far as I know, they're not used except for calculating the ratings of previously unrated players.

[Arnav Sud]

Great thanks!

[Tim Spanton]

Be careful. Quite often website performance ratings ignore the performer's rating, so beating a 1300 counts as a 1700 performance even if your rating is 1900.

[Nick Burrows]

Be careful. Quite often website performance ratings ignore the performer's rating, so beating a 1300 counts as a 1700 performance even if your rating is 1900.

Do you know if the chess-results performance ratings do this?

[Tim Spanton]

Be careful. Quite often website performance ratings ignore the performer's rating, so beating a 1300 counts as a 1700 performance even if your rating is 1900.

Do you know if the chess-results performance ratings do this?

I am fairly sure they do, which is why rating gain or loss is then a better guide to performance.