Caffeine Calculator
Calculate your total caffeine intake from different drinks.
Compare against the recommended safe daily limit.
Total Caffeine Intake
Caffeine per serving varies by drink type:
| Drink | Caffeine (mg per serving) |
|---|---|
| Coffee (8 oz / 240 ml) | ~95 mg |
| Espresso (1 shot) | ~63 mg |
| Black Tea (8 oz) | ~47 mg |
| Green Tea (8 oz) | ~28 mg |
| Soda / Cola (12 oz) | ~35 mg |
| Energy Drink (8 oz) | ~80 mg |
Total Caffeine = Caffeine per Serving × Number of Cups/Servings
Recommended safe daily limit:
- Adults: 400 mg/day (FDA recommendation)
- Pregnant women: 200 mg/day
- Teens (12–18): 100 mg/day
Exceeding 400 mg can cause anxiety, insomnia, and increased heart rate.