Caffeine Limit Calculator
Find your personal safe caffeine limit from your body weight, then tap your drinks as you have them — the tracker warns you before you cross the line.
Your safe daily limit
Safe limit today: —
EFSA guidance: up to 400 mg/day
or about 6 mg per kg, whichever is lower
or about 6 mg per kg, whichever is lower
Add a drink
Today intake
0 / — mg
0%
- No drinks logged yet today.
How to use
- Enter your body weight and pick kg or lb — your safe daily limit updates instantly.
- Tap a drink each time you have one, or add a custom mg value.
- Watch the running total and percent of your limit; you get a warning at 80% and a strong warning over 100%.
- The log saves in your browser for today only — tomorrow starts at zero.
Note: caffeine in real drinks varies by brand, size and brew. The mg values here are common averages. This is general information, not medical advice.