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Caffeine Calculator
Track your daily caffeine intake from coffee, tea, energy drinks, and other sources. Monitor consumption levels and optimize timing for better sleep and energy.
Caffeine Calculator
Track your daily caffeine intake and monitor how it affects your system over time
Total Today
0mg
0% of limit
In System Now
0mg
Active caffeine
Daily Limit
400mg
Recommended max
Wears Off In
~0h
Below 50mg
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Estimated caffeine: 64mg
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Caffeine Guidelines
- •Healthy adults: Up to 400mg per day (about 4 cups of coffee)
- •Pregnant individuals: Up to 200mg per day recommended
- •Avoid caffeine at least 6 hours before bedtime for better sleep
- •Caffeine sensitivity varies by individual genetics and tolerance
- •Side effects of excess: anxiety, jitters, rapid heartbeat, insomnia
Smart Caffeine Consumption
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Timing is Key
Stop caffeine intake 6-8 hours before bedtime. Caffeine half-life is 3-5 hours.
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Safe Limits
Adults: up to 400mg/day. Pregnant: 200mg/day. Teens: 100mg/day max recommended.
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Stay Hydrated
Caffeine is a diuretic. Drink extra water to prevent dehydration and maintain balance.
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Know Your Source
Coffee: 95mg/cup. Energy drinks: 80-300mg. Green tea: 25-50mg. Dark chocolate: 12mg/oz.