Calculate GM, IM, WGM & WIM title norms using FIDE performance rating rules
| Title | Min Perf | Min Games | Avg Opp |
|---|---|---|---|
| GM | 2600 | 9 | 2380 |
| IM | 2450 | 9 | 2231 |
| WGM | 2400 | 9 | 2181 |
| WIM | 2250 | 9 | 2031 |
| Score % | Dp | Score % | Dp |
|---|---|---|---|
| 100% | +800 | 55% | +35 |
| 95% | +677 | 50% | 0 |
| 90% | +589 | 45% | -35 |
| 85% | +538 | 40% | -80 |
| 80% | +493 | 35% | -133 |
| 75% | +401 | 30% | -196 |
| 70% | +298 | 25% | -273 |
| 65% | +190 | 20% | -366 |
| 60% | +117 | 15% | -480 |
| 58% | +88 | 10% | -589 |
A chess norm calculator is a free tool that helps estimate the rating of a player after a tournament and determine whether they won a norm or official title Such programs are very useful for folks who want to follow their progress and see how close they are to a title.
In chess, a norm means a high result in a tournament. That level is usually measured by a performance rating that is above a limit. For instance, to get a GM norm, a player must reach a performance rating of 2600 or more.
For an IM norm, the reqiuremnt is 2450 or more. FIDE delivers an official calculator to measure that performance.
There are various kinds of such calculators. Some focus on FIDE ratings, while others use USCF ratings. USCF tools count changes after a tournament similar to FIDE, but they base themselves on US Chess logic.
A particular tool counts the expectancy, the performance, the estimated rating after the event and whether a norm was won in a dual-rated USCF tournament. The advantage of this tool compared to the USCF rating estimator is that it also shows the expectancy and the possible norm.
There is also a simple program to count norms won in USCF-rated tournaments. The USCF once had a spreadsheet called “normcalc.xls” that players could download, but now it seems hard to find. Some other person created an Excel spreadsheet that counts if the performance of a player in an event will give them a USCF norm.
When you use those tools, players must enter the ratings of their known opponents. For unknown players, you need the rating and score to make the calculation. Some programs allow you to replace the two lowest ratings of opponents if they are too low.
For a GM norm, that limit is 2250. For an IM norm it is 2100, for a WGM norm 2050 and for a WIM norm 1900. Players without a rating are put in as 1600.
After you enter the data and click the button, the results appear including the current performance rating.
Other programs run locally on the browser and help to count FIDE Elo changes after a tournament. Using a local program is a good choice for privacy. The Elo system itself is the most used method for measuring the relative skills of players.
Some calculators can even find the change of the Elo rating after only one game against another person.
Although it is hard to find great results, the performance calculator gives right answers in the majority of cases. Even so, no one takes responsibility for the accuracy of those calculations. A question that often comes up is if norms can only be won in face-to-face tournaments or also in onlineevents.