6 min read
How to Count Calories: A Beginner's Guide
How to count calories, with or without an app: count a normal day, set a target, read UK or US food labels, weigh portions at first and check your trend.
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Calorie numbers look precise and are not. Labels are averages, restaurant dishes vary from what the menu says, portions get misjudged by eye, and almost everyone underestimates what they ate. These guides go through each source of error and how big it turns out to be.
This matters less than people fear, and in a different way than they expect. An estimate that is wrong by roughly the same amount every day still gives you a trend you can act on. An estimate that swings around does not.
So the useful question is not how to get this exactly right. It is which errors are worth doing something about and which ones you can stop worrying over. Weighing your cereal changes your number. Weighing a slice of bread mostly does not.
We are upfront about all this because the alternative is worse. An app that presents a daily total as fact sets you up to distrust the whole thing the first time the scale disagrees with the maths. Knowing the error is there is what makes the trend believable.
The guides here take the sources one at a time: labels, restaurants, memory, and whether the scales in your kitchen earn their place.
8 guides
6 min read
How to count calories, with or without an app: count a normal day, set a target, read UK or US food labels, weigh portions at first and check your trend.
Read the guide6 min read
Yes. 1 tbsp of oil is about 120 calories and 1 tsp about 40, but not all of it ends up in your food. How much to count when you fry, roast or bake.
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How accurate are AI photo calorie counters? Good at spotting food, but photos alone miss hidden oil and big portions. A short description helps.
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Whether to eat back exercise calories depends on how your target was set. When to eat none, when to eat some, and how to check it using your weight trend.
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Raw or cooked both work if the entry matches. 200 g of cooked rice logged as dry counts 730 calories, not 260. Rice, meat and packet labels explained.
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Weighing makes calorie tracking more accurate for loose foods like muesli and rice, and barely at all for bread. What the research shows.
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In a lab test of 269 restaurant meals, 1 in 5 had at least 100 more calories than listed. Which dishes run high, and how far off UK law allows.
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Underestimating how much you've eaten isn't a willpower problem, it's a well-documented memory effect. Here's what the research actually shows.
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