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Calculates total daily caffeine intake from coffee, tea, soda, and supplements. Monitors intake relative to safe limits.
Hướng dẫn từng bước
- 1Track sources: coffee 95mg/8oz, tea 25-50mg, cola 35mg, energy drinks 80-300mg
- 2Sum total daily intake
- 3Safe limit 400mg (typical); sensitive individuals 200mg
- 4Note timing (half-life 5-6 hours)
Ví dụ có lời giải
đầu vào
200mg, 5.7 hr half-life
Kết quả
100mg at 5.7hr
Lỗi thường gặp cần tránh
- ✕Not accounting for hidden caffeine (chocolate, decaf coffee)
- ✕Consuming caffeine late day then surprised at poor sleep
Câu hỏi thường gặp
How much caffeine is safe?
FDA recommends <400mg daily; varies by person; some tolerate 600+mg, others sensitive at 100mg.
Does caffeine affect sleep?
Yes; 100mg 8 hours before bed can reduce sleep quality; individual sensitivity varies.
Sẵn sàng để tính toán? Dùng thử Máy tính Caffeine miễn phí
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