Caffeine Intake Calculator
Track your daily caffeine intake from coffee, tea, energy drinks, and soda.
See if you are within the safe daily limit.
Your data stays in your browser. We do not store, collect, or transmit any information you enter.
Daily Caffeine Intake
Caffeine is the most widely consumed stimulant in the world. The FDA recommends a maximum of 400 mg per day for healthy adults.
Approximate caffeine content per serving:
| Beverage | Serving Size | Caffeine (mg) |
|---|---|---|
| Brewed coffee | 8 oz / 240 mL | 95 mg |
| Espresso | 1 oz / 30 mL | 63 mg |
| Black tea | 8 oz / 240 mL | 47 mg |
| Green tea | 8 oz / 240 mL | 28 mg |
| Energy drink | 8 oz / 240 mL | 80 mg |
| Cola / soda | 12 oz / 355 mL | 34 mg |
| Dark chocolate | 1 oz / 28 g | 12 mg |
Guidelines:
- Pregnant women: limit to 200 mg/day
- Teenagers: limit to 100 mg/day
- Children under 12: caffeine not recommended
- Effects can last 3-7 hours depending on the person