Hi Andrew, The WW formula is a) their copyright and b) only for the US version of WW. If there is a non proprietary formula I can use then please let me know and I'll add it. As I designed this for the program I was on I only catered for 2 factors in the calc. I'll have a look at making the number of factors configurable and adding a third, but that might make the calc.csv matrix very large. WW here supply a slider that you can use to take the Cals & Sat fat and get the points value for an item. How does this work with Fibre? Can you give me an example. Regards, Shep