AI photo calorie tracker — review your meal before saving
A photo is a starting point for your food log. Calorie.one identifies food, estimates quantities and shows you an editable preview before anything is saved.
From a photo to a reviewable meal
Take a photo or choose one from your gallery. Add a description if there are ingredients the camera cannot see, such as cooking oil or a dressing. The analysis breaks the meal into ingredients with estimated gram weights. You can change the description, quantity and nutrition values, or remove an item before saving.
AI recognises food; the database supplies matched nutrition
For a reliable match, Calorie.one uses USDA FoodData Central values from SR Legacy, Foundation Foods or FNDDS. Each matched line carries its source and FDC ID. If there is no reliable match, an estimate is labelled as an estimate. Historical FRIDA entries retain their original source; they are never relabelled as USDA.
What a photo cannot measure
A photo cannot weigh a portion or reliably reveal hidden ingredients. Raw and cooked weights are different, and cooking can add fat or remove water. Check quantities and preparation state against what you actually ate. Calorie.one does not promise a fixed accuracy percentage for photo analysis.
Text and manual entry are available too
You can describe a whole meal in English, use food search, scan a barcode or enter known nutrition values manually. English descriptions containing ounces or pounds are normalised to grams. If you already know the numbers from a label or recipe, manual entry preserves those numbers.
Your confirmation is the final step
The values you approve are the values saved to your meal history. Saving a confirmed preview does not trigger another AI analysis. You can later edit, copy or delete the meal from your history.
Try a meal you know.
Start with a familiar meal and check the ingredient preview for yourself.
Try Calorie.one