Rating Calculator
To get started, you'll need your opponents'
ratings.
Enter your current rating, your opponents' ratings, and your results.
Then click 'Calculate'. The tool will determine your new rating plus
show some intermediate numbers used to compute the rating.
(You must also have JavaScript enabled in your
browser.)
***
Your
new rating = [Ro + K * (W - We)]
Your performance rating = [(Total of opponents' ratings + 400 * (Wins -
Losses)) / Gms]
With thanks to
about.com
for
this calculator.
K-Factor in Ireland
Your K-Factor can be one of four values
K = 40 where rating < 2100 and age < 21
K = 32 where rating < 2100 and age ≥ 21 and playing
experience
< 8 years
K = 24 where rating < 2100 and age ≥ 21 and playing
experience ≥
8 years
K = 16 where rating ≥ 2100