Alright guys, I just did my own version of the SAT-ACT conversion charts floating around. I got the offical data:
http://www.act.org/news/data/08/pdf/National2008.pdf http://www.collegeboard.com/prod_dow...tile_ranks.pdf
And it turned out around 1.4 million students took each test, so it was really easy to compute exact percentiles and then convert.
I calculated the percent of students that score AT or below the given score, and found that every score on the ACT matched with an SAT score within 0.1 percentage point.
Here are my results:
ACTSAT--Percent of students at or below this score
36-2400-100
35-2390-99.98
34-2300-99.7
33-2250-99.3
32-2200-98.6
31-2140-97.4
30-2070-95.8
29-2000-93.7
28-1950-91.5
27-1890-88.2
26-1830-84.3
25-1780-80.4
Basically, this means if you get 32 (like I did), 98.6% of the students that took either test scored at or below 32/2200.
My results pretty much meshed with all the table floating around, but I was much more accurate in calculating the percentiles. I should note that the table in the ACT article of wikipedia is pretty far off the mark though, all the others are good.