How do I count calories from a photo of my meal?

What happens after you take the photo

1. The app finds each food on the plate.
2. It estimates the portion of each one.
3. It works out calories, protein, carbs and fat per item.
4. It adds everything into one total you can edit.

In Plate-wise, a breakfast photo came back as 5 items: scrambled eggs (255 kcal), sourdough toast (200), mashed avocado (115), sautéed mushrooms (50) and a cappuccino (120). Total: 740 kcal. Each item shows its portion and macros, and you can change any of them.

How accurate is it?

A 2023 review of 52 studies found AI photo estimates had average calorie errors from 0.10% to 38.3% ^[1]. Results were closer for single, simple foods. Mixed dishes, sauces and hidden oils are harder for any method, human or AI.

Tips for a better estimate

• Shoot from above, with good light.
• Get the whole plate in the frame, with foods apart if you can.
• Mention added oils, sauces or dressings.
• Scan the barcode on packaged foods instead.

Why a photo helps you keep going

Logging by hand means searching and picking from long lists for each item. A photo takes seconds, which makes it easier to log every meal. Research links regular self-monitoring with weight loss ^[2].

Try it

Plate-wise is free on iPhone, with 5 photo scans a day.