Log meals and estimate calories with ChatGPT
The poster uses ChatGPT as a rough nutrition and fitness tracker, estimating calories and logging what they eat.
Done withChatGPT
- What they did
- The poster is trying to use ChatGPT Plus as a rough tracker for meals, burned calories, workouts, weight, a weekly work menu, and a Google Drive food log. In the thread, the most concrete working setup comes from a commenter who keeps one dedicated chat, starts each day with date and morning weight, logs weighed meals and exercise there, has ChatGPT maintain a simple daily calorie/protein/fiber sheet, and each evening uploads the PDF back into chat for ChatGPT to update before saving the new version.
- How it went
- It was usable enough for daily tracking, especially when foods were weighed and labels were photographed for new items. But the thread repeatedly says the system is unreliable at memory and exact numbers, with estimates drifting, missed Drive logs, and calorie counts changing when challenged.
- Worth knowing
- The clearest catch is that the workable routine is manual and repetitive: weigh food, keep one chat just for logging, and re-upload and save an updated PDF every night.
Try it yourself with ChatGPT
Act as my food log. I'll tell you what I ate in plain language, like '[example meal]', and you estimate calories and protein, add it to a running list for today, and show the daily total. My goal is about [calorie target] calories per day. At the end of the day, give me a short summary of how I did and note that the numbers are rough estimates.
Want help getting this working? Join the Vibe Coding Academy ↗ Run by Alex Finn, who also runs this site.
Source: Reddit · Sep 1, 2026
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