Coffee Caffeine Calculator
Track your daily caffeine intake and understand how it affects your body.
Your Drinks
Your Profile
Total Caffeine Intake
63 mg
16% of recommended daily limit (400mg)
Per Body Weight
0.9 mg/kg
Safe: 3-6 mg/kg
Effective Intake
63 mg
Based on sensitivity
Time to Metabolize
14.6 hrs
Half-life: 5.5 hrs
Cutoff Before Bed
6 hrs
For quality sleep
Safe Limits For Your Weight
Caffeine Content Reference
Espresso Shot
63mg per 1 oz
Drip Coffee
95mg per 8 oz
Latte
63mg per 8 oz
Cappuccino
63mg per 8 oz
Americano
63mg per 8 oz
Cold Brew
200mg per 12 oz
Instant Coffee
62mg per 8 oz
Decaf Coffee
5mg per 8 oz
Black Tea
47mg per 8 oz
Green Tea
28mg per 8 oz
Energy Drink
80mg per 8.4 oz
Cola
34mg per 12 oz
Dark Chocolate
23mg per 1 oz
About Caffeine
Caffeine is the most widely consumed psychoactive substance in the world. It works by blocking adenosine receptors in the brain, reducing feelings of tiredness.
Benefits: Improved alertness, concentration, and physical performance. May reduce risk of certain diseases.
Side effects of too much: Anxiety, insomnia, digestive issues, rapid heartbeat, muscle tremors.
FDA recommendation: Up to 400mg per day for healthy adults (about 4 cups of brewed coffee).
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
Formula Source: Standard Mathematical References
by Various