CleverCafe
Caffeine Calculator — How Much Caffeine Are You Drinking Per Day?
Estimate your daily caffeine intake and compare it to common safe ranges.
Pick a drink, amount, size, and strength below—then see how your intake compares.
Estimates are based on average caffeine values. Actual amounts may vary.
For educational use only and not a substitute for medical advice.
How it works
Main result shows your selected drink only. This table compares all drinks using the same current settings.
Compare estimated totals for all drink types using your current settings:
| Drink | Estimated Caffeine (current settings) |
|---|
How much caffeine is safe?
Most healthy adults can safely consume up to 400 mg per day. Higher amounts may cause jitters, anxiety, and sleep issues.
Caffeine by drink
| Drink | Typical Caffeine (Approx.) |
|---|---|
| Coffee | 95 mg per 8 oz |
| Espresso | 63 mg per 1 oz shot |
| Latte | 75 mg per 8 oz |
| Cold Brew | 120 mg per 8 oz |
| Tea | 47 mg per 8 oz |
| Energy Drink | 80 mg per 8.4 oz can |
Energy drink caffeine varies widely by brand and can size.
How long does caffeine last?
Caffeine stays in your system for about 4–6 hours on average, depending on metabolism—and can still affect when you fall asleep later in the day.
FAQs
Is 200 mg caffeine a lot?
No, that is usually a moderate and generally safe amount.
Is 400 mg caffeine safe?
Yes, this is considered the safe upper limit for most adults.
How much caffeine per day is too much?
Most experts recommend staying under 400 mg of caffeine per day. More can lead to anxiety,
poor sleep, and increased heart rate.
Which coffee has the most caffeine?
Cold brew is often among the highest in caffeine.
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