Daily Caffeine from Drinks
Track daily caffeine by multiplying drink counts by caffeine per serving. The FDA’s 400 mg reference for most adults is not a universally safe allowance; sensitivity and personal circumstances vary.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
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How to use this tool
Enter cups or cans and the actual mg in each serving. A large bottle may contain multiple labelled servings, and the preset amounts are examples that should be replaced with product information.
Results and examples
Read the total in mg and consider caffeine from foods, supplements or medicines that this form omits. The 200/400 mg messages alone cannot establish pregnancy guidance or individual safety.
Worked example
Two coffees at 95 mg each plus one tea at 40 mg total 230 mg.
Limitations
- The tool does not retrieve product ingredients automatically.
- Pregnancy, breastfeeding, medications and sensitivity need individual guidance.
Fields
| Field | Guidance and constraints |
|---|---|
| Americano (cups) | Check the unit and format displayed beside this field. |
| mg per cup | Check the unit and format displayed beside this field. |
| Tea (cups) | Check the unit and format displayed beside this field. |
| Energy drinks (cans) | Check the unit and format displayed beside this field. |
| mg per can | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Is anything below 400 mg safe for everyone?
No. FDA guidance explicitly recognises differences in sensitivity and circumstances.
What if my cup is larger?
Enter the caffeine amount for the entire cup you actually drank.
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