Experts recommend you limit the amount of saturated fats you eat to less than 7 percent of total daily calories. That means, for example, if you need about 2,000 calories a day, no more than 140 of them should come from saturated fats. That’s about 16 grams of saturated fat a day.
No more than 20 of those calories should come from trans fat. That’s less than 2 grams of trans fat a day. Given the amount of naturally occurring trans fat you probably eat every day, this leaves virtually no room at all for industrially manufactured trans fat.
Source: American Heart Association