Home/Tools/Calories from a Photo

Calories from a Photo

Paul Hummel Last reviewed October 6, 2026 3 min read
The photo is sent encrypted to OpenAI for analysis and is not stored by us. More in the privacy policy.
Analyzing…

0kcal
0 gCarbs0 %
0 gProtein0 %
0 gFat0 %
Servings
1
Ingredients

    ✓ Save in the app
    Track every meal with daily targets and history: in the GymLog AI app.
    You have used your free scans.

    Keep scanning in the GymLog AI app – with daily targets and history.

    Get the app for free →
    Quick answer

    One photo of your meal is enough: AI recognizes the dish, estimates the portion and calculates calories and macros. According to Shonkoff et al. (2023), average relative errors of such AI estimates ranged from 0.10 to 38.3 percent depending on the study.

    Calories in three steps

    1. Snap: Shoot the meal from above with the whole plate in frame. 2. Upload: The photo is downsized in your browser and sent for analysis. 3. Adjust: If the portion is off, change the servings.

    When calories from a photo make sense

    Photos work best for meals without a barcode: home-cooked food, canteens or restaurants, where weighing every ingredient is rarely practical. Shonkoff et al. (2023) report lower errors for single, simple foods than for complex dishes.

    A photo is enough for a quick overview. For precise tracking, adjust amounts afterwards, especially oil or sauces, which are hard to see in pictures.

    Track every meal in seconds

    GymLog AI logs meals via photo, voice or chat – with daily targets for calories and macros.

    Download on the App StoreGet it on Google Play

    Related questions

    Sources

    1. Shonkoff, E., Cara, K. C., Pei, X. A., et al. (2023). AI-based digital image dietary assessment methods compared to humans and ground truth: a systematic review. Annals of Medicine, 55(2), 2273497. PubMed
    Results are AI estimates and may deviate considerably. They are not a substitute for nutritional advice. If you have a medical condition, allergies or an eating disorder, please consult a professional.