There is a simple conversion however. Here in the U.S., weights are in ounces of course, but more importantly for figuring sugar content is the amount of sugar in teaspoons. Interestingly, 1 teaspoon of sugar equals 4.2 grams.
Thing is, as referenced by Pasta is that,carbohydrates, a key nutrient, are listed on the nutrition facts (at least here). Sugars, both naturally occurring sugar and added sugar, are carbohydrates and are listed under total carbohydrates, along with dietary fiber. Naturally occurring sugars include fructose found in fruits as well as lactose found in milk and milk products.
Added sugars would include white sugar, brown sugar, honey, corn syrup, fructose and dextrose.
To determine the "added sugars, subtract the amount of "fiber" (in grams) from the total carbs and divide by 4.2. This number, then, represents the added sugars (in grams) as opposed to naturally occurring sugar inherent in carbohydrates.
I've been on a low sugar regimen for about six months and am totally surprised at how good I feel… never mind the steady weight loss.
I'm mystified by your reference to cutting out chess, since it is an excellent source of protein… especially the low fat ones such as baby swiss. Used in moderation of course. Poultry white meat is probably the best source of protein but avoid the skin, since, unlike beef for example, the fat in chickens and other poultry is carried by the bird just under the skin rather than "marbled" within the meat.
Keep some high protein drinks around for those times hunger really strikes. Atkins, for example, contains 16 grams of protein but at only 150 calories and (depending on the flavor choice) no sugar or at most one teaspoon (4.2) grams of sugar. They are quite tasty, BTW.