There is an excellent book called Carbs & Cals available from Amazon. Many of us use it. It has thousands of foods, fresh and packaged, with a photo of it on a plate. It shows the weight, amount of carbs, calories, protein, fat and fibre. I have had mine 3 years and still use it. It is not expensive.
Additionally I use the supermarket websites.
I don't use the on-line sites such as My Fitness Pal because much of the information is incorrect as it is all entered by other users, a lot of whom are from abroad where they have different nutritional values, and also because they are calorie orientated for weight loss, so many items show Nil carbs as the user has ignored this as irrelevant to calories.