- Most calorie-counting errors come from seven recurring mistakes, not from a lack of willpower.
- Calories most often go missing in drinks, oil, small bites between meals and portion estimates.
- You don't need to be perfect. Just log honestly and always in the same way.
- At the end you'll find a short checklist you can save.
Counting calories, trying hard and the number on the scale won't move? Before you start doubting yourself or your metabolism, check whether you're making one of the mistakes below. There's no need to feel bad about them. Almost everyone who starts counting makes them. If you're just starting out, the basic guide How to count calories will help.
1. You forget drinks and oils
You almost always log solid food. But the latte on the way to work, the milk in your coffee or the oil in the pan slip by easily. Fat has 9 kcal per gram, so even a little oil adds up, and calories from drinks are easy to overlook.
How it skews the number: one large tablespoon of olive oil (about 13 g) is roughly 120 kcal. A latte is around 150 to 250 kcal depending on size and type of milk. Two lattes a day plus oil in two meals add up to 540 to 740 kcal missing from your log.
What to do: measure oil with a spoon, not by eye. Log drinks as soon as you buy them.
2. You eyeball portions or mix up raw and cooked weight
When cooking at home, the biggest confusion comes from the difference between raw and cooked foods. Rice, pasta and legumes soak up water as they cook, so their weight goes up and there are fewer calories per gram.
How it skews the number: 100 g of dry rice is about 350 kcal, 100 g of cooked rice about 130 kcal. If you weigh 80 g of dry rice (about 280 kcal) and log it as cooked (about 104 kcal), you're missing 176 kcal. In a single meal.
What to do: pick one method (for example, always cooked) and stick with it. A kitchen scale helps too, at least for the first two weeks, so you build a feel for what 150 g of a side dish looks like. You'll find typical values in the calorie database.
3. You don't log the small bites between meals
A handful of nuts at your computer, a piece of chocolate from a colleague, "just a taste" while cooking, leftovers from your child's plate. Each one looks harmless on its own. Together they're calories that never appeared in your log.
How it skews the number: 30 g of nuts (roughly a full handful) is about 180 kcal. If that happens every day, it's 1,260 kcal a week, almost a whole day of food missing from your log.
What to do: log it right away while it's fresh in your mind. If you don't want to interrupt your work, in Caloora you can log food by typing or by voice. Meals you repeat can be added with one tap using "Eat again".
A photo of your plate, a barcode from the package, a few words or one tap on "Eat again". The easier the logging, the fewer small bites slip away. You can always edit the result.
Try Caloora free4. You trust every entry without checking
Food databases contain wrong, duplicate and outdated entries. And even a correct entry can be used the wrong way, for example when you confuse "per 100 g" with "per package". Be just as careful with an AI estimate from a photo: it's quick and useful, but it's still only an estimate. More in the guide AI calorie counting.
How it skews the number: the package says "160 kcal per 100 g" and you eat the whole 250 g pack. The real value is 2.5 × 160 = 400 kcal, not 160. That's a difference of 240 kcal.
What to do: for packaged foods, scan the barcode and check how many grams the value refers to. For complex dishes (soups, bakes, restaurant meals), treat the entry as an estimate and allow a small margin. If you're unsure of a value, compare it with a similar food.
5. Strict weekdays and a free-for-all weekend
You stick to the plan during the week, then "make up for it" on Friday and Saturday. Your weekly average then looks completely different from what you think.
How it skews the number: a 400 kcal deficit over five days is 2,000 kcal. If on Saturday and Sunday you go over your daily needs by 1,000 kcal each (pizza, wine, dessert), you lose the whole 2,000 kcal. The week comes out at zero, even though you stuck to the plan on workdays.
What to do: log weekends too. You don't have to restrict yourself, just know how much you eat. When you spread calories across the whole week, you get more freedom than with strict Mondays and weekend guilt. For how to set a deficit sensibly, see the calorie deficit guide.
6. You set your target too strict
When you want fast results, it's easy to overdo a low intake. It usually lasts a few days, then comes tiredness, hunger and cravings for everything sweet.
How it looks in numbers: with daily needs of 1,990 kcal, a 500 kcal deficit means an intake of 1,490 kcal. If you drop to 1,000 kcal, the deficit is almost 1,000 kcal a day. A pace you can't keep up long term doesn't make much sense.
What to do: start with a moderate deficit, for example 300 to 500 kcal, and watch how you feel. There's no single right number for everyone. If you have doubts, talk to a doctor or a dietitian. For a broader view, see the guide How to lose weight in a healthy, sustainable way.
7. You judge results by a single day on the scale
Body weight fluctuates through the day and the week because of water, salt, digestion and, for women, the menstrual cycle. A single reading therefore says almost nothing about the fat you've really lost or gained.
How it skews the picture: after a salty meal your weight can be higher the next morning even though you haven't gained fat. If you give up because of that, you throw away a good plan over a normal fluctuation.
What to do: weigh yourself under similar conditions (morning, after using the toilet) and watch the average over 7 to 14 days. After two to three weeks, adjust your intake based on the trend, not on a single day.
- Did I log drinks, including coffee with milk?
- Did I log oil, butter and sauces?
- Do I know whether the food was weighed raw or cooked?
- Did I log small bites, tastings and leftovers?
- Does the "per 100 g" value match what I actually ate?
- Am I logging weekends too?
If you can't capture everything, that's fine. A perfect log doesn't exist; the useful one is the one you keep up long term. You'll also find recipes with calculated calories on the blog: healthy lunches under 600 kcal and high-protein breakfasts.
This text is general inspiration, not individual advice. If you have or have ever had an eating disorder, counting calories can harm you. Be just as careful if you're pregnant, breastfeeding, under 18 or have a condition where diet matters. Talk to a doctor or a dietitian first.
Frequently asked questions
Why don't my calories add up even though I log everything?
Most often it's small bites, drinks and oils missing from your log, or wrong portions. Try logging extra carefully for one week and compare the result with your weight trend over two weeks.
How accurate does my log need to be?
It doesn't need to be perfect. What matters is logging long term and in a consistent way. Most errors then even out and the trend stays readable.
Is it better to weigh food or estimate?
Weighing is more accurate, especially for oil, nuts and side dishes. At the start it helps you build a feel for portions, later an occasional check is enough. If weighing wears you out, estimating with honest logging is better than nothing.
Can I rely on an AI estimate from a photo?
AI can estimate the food and portion from a photo, but it's only an estimate. For complex dishes, check and adjust it. For packaged foods, a barcode is more accurate.
How long until I see results?
You can only judge a change after several weeks, by following the average of your weight rather than a single reading. The pace is individual and nobody can guarantee it.
The information on this page is general and educational. It does not replace advice from a doctor, dietitian or trainer. If you have a health condition, take medication, or are pregnant or breastfeeding, talk to a professional before changing your diet or exercise.