How to get a FIDE rating • page 2/2 • General Chess Discussion • lichess.org

I was told: you can buy it in Czechia.

For calculating and receiving a FIDE Elo you have reached enough games for a FIDE Rating. (only 5 games minimum needed, you got 9).

Calculating: average rating of opponent, you scored 55.56% against them, which means you scored 5.56% more. There are FIDE Tables to look up what your performance was, and your initial Fide Rating will be this performance rating.
Just for approximation: 1% above 50% is worth 7 Fide Elo points. So you your rating will be: Average rating of your opponents + 5.56x7 = average rating of opponents + 39 = your rating

Approximately. A table will be more accurate, as the latter part is not a fixed 9 elo per percentage but it is curved. But 7 is a good approximation to calculate it "on foot".

You do interpolation between the given table points, this is then accurate enough. (but the actual number is based on a curve)

if you win 25% to 80% of the games, the elos of your performance will be closer to 8 elo per percent above/below 50%.

If you win more than 90% you get a bonus boost start to increase significiantly until 100% is reached. A 100% winning percentage means the performance rating would be +800

Here is a performance Table:
https://www.318chess.com/elo.html

I was told: you can buy it in Czechia. For calculating and receiving a FIDE Elo you have reached enough games for a FIDE Rating. (only 5 games minimum needed, you got 9). Calculating: average rating of opponent, you scored 55.56% against them, which means you scored 5.56% more. There are FIDE Tables to look up what your performance was, and your initial Fide Rating will be this performance rating. Just for approximation: 1% above 50% is worth 7 Fide Elo points. So you your rating will be: Average rating of your opponents + 5.56x7 = average rating of opponents + 39 = your rating Approximately. A table will be more accurate, as the latter part is not a fixed 9 elo per percentage but it is curved. But 7 is a good approximation to calculate it "on foot". You do interpolation between the given table points, this is then accurate enough. (but the actual number is based on a curve) if you win 25% to 80% of the games, the elos of your performance will be closer to 8 elo per percent above/below 50%. If you win more than 90% you get a bonus boost start to increase significiantly until 100% is reached. A 100% winning percentage means the performance rating would be +800 Here is a performance Table: https://www.318chess.com/elo.html

shivamsingh1607

#12

I can see now in my fide profile, that I have got the rating (1626)

mkubecek

#13

However, there is one important difference against what was suggested in comment #11 is that in addition to your rated games, also two "virtual" draws against 1800 rated opponents are added to the rated games from which the rating performance is calculated (article 8.2.2). In other words, you add 3600 to the sum of your opponents' ratings, 2 to the number of rated games played and 1 to your total score. Therefore the score used is 6/10 (60%, 0.6) and the difference is +72.

In practice, the initial rating is "moderated" towards 1800 and the farther your rating performance is from 1800, the stronger the effect. The effect is also stronger when there are not so many rated games (like 8 here).

If you really want to calculate the initial rating yourself, the best source of information are the FIDE Rating Regulations: https://handbook.fide.com/chapter/B022024 (the relevant table is in article 8.1.1). In particular, 5/8 is 62.5%, rounded to 63% (0.63), the difference against the rating average would be +95. However, there is one important difference against what was suggested in comment #11 is that in addition to your rated games, also two "virtual" draws against 1800 rated opponents are added to the rated games from which the rating performance is calculated (article 8.2.2). In other words, you add 3600 to the sum of your opponents' ratings, 2 to the number of rated games played and 1 to your total score. Therefore the score used is 6/10 (60%, 0.6) and the difference is +72. In practice, the initial rating is "moderated" towards 1800 and the farther your rating performance is from 1800, the stronger the effect. The effect is also stronger when there are not so many rated games (like 8 here).