CalorieKing provides a searchable food database which lists nutritional values for various foods, including the amount of carbohydrates each type of food contains. The amount of carbohydrates in each food is listed by grams as well as by percentage of daily value.
CalorieKing provides carbohydrate values for packaged foods, restaurants and fresh foods. The amount of carbohydrates in fresh foods, such as fruits, depends on the weight of the particular fruit in question. To get an accurate calculation of the amount of carbohydrates contained in fresh foods, a kitchen scale may be used.
Allrecipes.com provides a large collection of low carbohydrate recipes with approximate nutritional information and includes carbohydrate counts as well.