Some brands of woolworths canned chickpeas have 3 servings per container and 45kcal per serving, so 135kcal for a 400g container, the container claims to be 60% chickpeas and 40% water. However Macro organic 420g can of chickpeas is 240 kcal and also seems to be 60% chickpeas and 40% water, why such a massive difference? The macronutrients such as protein and carbs seem to be scaled accordingly to the calories though. The woolworths brand only has 10.2g of protein for the whole 135kcal can while other higher calorie brands like the macro organic have 15- 20g.
It gets confusing. Personally, if I’m measuring calories in canned beans, or chickpeas or lentils or whatever, I find it easiest to drain + rinse them. Then measure out a certain number of grams and put “cooked black beans” or something similar. If you use MyFitnessPal, I use the USDA ones for years