Caffeine Calculator
Track your daily caffeine intake and stay within safe limits
Calculate Your Daily Caffeine Intake
Track Your Caffeine Sources
Tea Cups
50mg per cups (190g)
Filter Coffee Mugs
140mg per mugs (350g)
Instant Coffee Mugs
100mg per mugs (350g)
Cola Cans
40mg per cans (330ml)
Energy Drinks
80mg per cans (250ml)
Espresso Shots
45mg per shots
Green Tea Cups
40mg per cups (190g)
Dark Chocolate
12mg per squares (10g)
Additional Caffeine (Optional)
Add any other caffeine sources not listed above
Your Caffeine Intake Results
Assessment
No caffeine consumption detected
Recommendation
You can safely have some caffeine if desired
Caffeine Content Reference
Daily Caffeine Limits
Adults (18+)
Up to 400mg daily (3-4 cups coffee)
Pregnant Women
Up to 200mg daily (1-2 cups coffee)
Teenagers (13-18)
Up to 100mg daily (1 cup coffee)
Children (0-12)
Not recommended
Caffeine Effects
Low Dose (50-200mg)
Improved alertness, mood, and focus
Moderate Dose (200-400mg)
Enhanced performance, possible jitters
High Dose (400mg+)
Anxiety, insomnia, rapid heartbeat
Caffeine Tips
Timing Matters
Avoid caffeine 6 hours before bedtime
Stay Hydrated
Drink water alongside caffeinated beverages
Gradual Changes
Reduce intake slowly to avoid withdrawal
Understanding Caffeine and Your Health
What is Caffeine?
Caffeine is a natural stimulant found in coffee, tea, chocolate, and many other foods and beverages. It works by blocking adenosine receptors in the brain, which helps you feel more alert and awake.
How Caffeine Affects Your Body
- 15-45 minutes: Peak absorption, maximum alertness
- 3-5 hours: Half-life in most adults
- 6+ hours: Can still affect sleep quality
- 12-24 hours: Complete elimination
Benefits vs. Risks
Potential Benefits:
- • Improved mental alertness and focus
- • Enhanced physical performance
- • Potential antioxidant effects
- • May reduce risk of certain diseases
Potential Risks:
- • Sleep disruption and insomnia
- • Anxiety and jitters
- • Dependence and withdrawal
- • Increased heart rate and blood pressure
Medical Disclaimer
This calculator provides general guidance only. Individual tolerance varies significantly. Consult healthcare providers if you have heart conditions, anxiety disorders, pregnancy concerns, or experience adverse effects from caffeine consumption.