Caffeine Content Formula:
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The caffeine content in coffee varies by type, but a standard cup (240ml) of brewed coffee typically contains about 95mg of caffeine. This calculator helps you estimate your total caffeine intake based on the number of cups consumed.
The calculator uses the simple formula:
Where:
Explanation: The calculation assumes a standard caffeine content of 95mg per 240ml cup of brewed coffee.
Details: Monitoring caffeine intake is important as the recommended maximum is about 400mg per day for healthy adults. Excessive consumption can lead to restlessness, insomnia, and other side effects.
Tips: Enter the number of standard coffee cups you've consumed. The calculator will estimate your total caffeine intake. Remember that actual caffeine content can vary based on brewing method and coffee type.
Q1: Is 95mg accurate for all coffee types?
A: No, this is an average. Espresso has about 63mg per shot, while instant coffee has about 65mg per cup.
Q2: What's the safe daily caffeine limit?
A: Up to 400mg per day is generally safe for most healthy adults (about 4 cups of coffee).
Q3: How long does caffeine stay in your system?
A: Caffeine has a half-life of about 5 hours, meaning it takes about 5 hours for half the caffeine to be eliminated.
Q4: Does caffeine content vary by coffee brand?
A: Yes, different brands and roasts can have varying caffeine levels. Dark roasts typically have slightly less caffeine than light roasts.
Q5: Can I use this for other caffeinated drinks?
A: No, this calculator is specifically for standard brewed coffee. Tea, energy drinks, and sodas have different caffeine contents.