Caffeine Intake Calculator
Add today's drinks to see your total caffeine and how close you are to your limit
Add each coffee, energy drink, or tea you've had today and this tool tallies up your total caffeine automatically. Choose your profile — adult, pregnant, or teen (scaled by body weight) — and it compares your running total against the recommended daily limit for that group, showing exactly what percentage you've hit. Everything is calculated in your browser and nothing is sent to a server.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Choose your profile at the top (adult, pregnant, or teen), and enter your body weight if you're a teen.
- Tap the preset drink buttons — americano, espresso, cold brew, and so on — to add what you've had today to the list.
- Adjust the quantity of each drink, or remove any entry with the [x] button.
- Check your running caffeine total and the progress bar at the top to see how much of your limit you've used.
FAQ
- How is the caffeine limit calculated?
- The reference limit is 400 mg for adults and 300 mg during pregnancy. For teens, the limit is body weight in kilograms multiplied by 2.5 mg.
- How do I add a drink that isn't on the list?
- Right now you can only add from six presets: americano, espresso, cold brew, canned coffee, energy drink, and green/black tea.
- Are the drinks I log saved?
- No. Everything is calculated in your browser only — refreshing the page clears the list, and nothing is stored on a server.