Photo calorie counter: how does it work?

What a photo can estimate

Grizzly uses the image to suggest a meal name, ingredients, portions and estimated nutrition. The result includes calories, protein, carbs and fat.

This can help you get started with a mixed meal. It remains a suggestion: two similar-looking dishes can contain very different amounts of cooking fat.

What the camera cannot see

A photo may not reveal cooking oil, sugar in a sauce, the full recipe or the weight of the food. A deep bowl can also hide part of the portion.

If you know an ingredient or quantity, use that information to adjust the result. For packaged food, a barcode and nutrition label can provide a more suitable starting point.

Take a photo, review, then save

1. Frame the meal so its different foods are visible in good lighting.

2. Check the suggested dish and ingredients. Correct missing or misidentified foods and adjust the portion.

3. Save the meal. Its nutrition is added to your daily tracking, and you can find it again in your food diary.

When to use another method

For a recipe with known ingredients, manual entry or a written description may be easier. For packaged food, try the barcode scanner or food search.

You can combine these methods in Grizzly. The aim is a diary you can maintain, without treating a visual estimate as a laboratory measurement.

Check a portion against a nutrition label

For packaged food, first check whether the values refer to 100 g, 100 ml or one serving. The serving on the label is not necessarily the amount you ate. Always compare matching units.

Fictional example: a label lists 150 kcal per 100 g. For 160 g eaten, the calculation is 150 × 160 ÷ 100 = 240 kcal. For half a packet, check its net weight before dividing. These figures illustrate the calculation; they are not the nutrition values of a particular food.

A useful check before saving

Start with the food itself: raw rice and cooked rice describe different preparations. Choose an entry that matches what you actually weighed or served.

Next, check what is hard to see: oil, butter, sauces and toppings. If you know them, correct the suggested ingredients and amounts; otherwise, remember that the total is uncertain.

Finally, distinguish the whole dish from your portion. When sharing a recipe, do not log all its ingredients as though you ate it alone. A scale or manufacturer information can help verify an amount; the image alone cannot confirm it.