I'm not sure if this is a perfect formula but it's pretty darn close, just a little difficult while you're standing in the grocery store trying to figure out what to buy....
#of calories + (fat gramsX50) - (fibre gramsX50) divided by 50 equals the number of points
if you understand that, here's an example for 250 calories with 2 grams of fat and 1 gram of fibre it would be....
250 + 100 (fatX50) - 50 (fibreX50) = 300 divided by 50 would be 6 points.
Did I totally confuse you or is that helpful at all? When you join WW they give a points calculator (really just a slide ruler) which helps and there's also some points calculators on line that give really exact calculations here's a link.....
http://www.angelfire.com/co/mtrevino/points.html
hope this all helps,
Elisa