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Daily Caffeine Limit Calculator

Calculate your daily caffeine intake and check if you exceed the EFSA recommended limit of 400 mg. Compare espresso, drip coffee, tea, and more.

Sources: EFSA — Scientific Opinion on the Safety of Caffeine (2015) · FDA — Spilling the Beans: How Much Caffeine is Too Much?

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How Much Caffeine Can You Have Per Day

Caffeine is the most consumed psychoactive substance in the world. But how many cups of coffee per day are truly safe? This calculator helps you find out based on the official EFSA (European Food Safety Authority) guidelines.

The EFSA Limit

In 2015, EFSA published its scientific opinion on caffeine safety, establishing that:

  • Healthy adults: up to 400 mg/day of caffeine does not raise health concerns
  • Single dose: do not exceed 200 mg in one sitting
  • Pregnant women: maximum 200 mg/day
  • Adolescents: maximum 3 mg per kg of body weight

Caffeine Content in Common Beverages

  • Espresso: 63 mg per shot (25-30 ml)
  • Moka coffee: 85 mg per cup
  • Drip/Americano coffee: 95 mg per cup (240 ml)
  • Black tea: 47 mg per cup
  • Green tea: 30 mg per cup
  • Cola: 34 mg per can (330 ml)
  • Energy drink: 80 mg per can (250 ml)

Watch for Hidden Sources

Remember that caffeine is not only in coffee. Dark chocolate (about 20 mg per 30 g), some over-the-counter medications (up to 65 mg per tablet), and pre-workout supplements can contain significant amounts.

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Frequently Asked Questions

How many cups of coffee can you drink per day?▼
According to EFSA, the safe caffeine limit for a healthy adult is 400 mg per day, equivalent to about 6 espressos or 4-5 drip coffees. For pregnant women the limit drops to 200 mg/day (about 3 espressos). These limits refer to total caffeine from all sources, including tea, cola, and chocolate.
How much caffeine does espresso vs drip coffee have?▼
An espresso contains an average of 63 mg of caffeine per shot (25-30 ml), while drip/Americano coffee contains about 95 mg per cup (240 ml). Moka pot coffee has about 85 mg per cup. The difference depends on the extraction method: moka has prolonged contact between water and coffee grounds, extracting more caffeine.
Does tea contain caffeine?▼
Yes, tea contains caffeine (also called theine, which is the same molecule). Black tea contains about 47 mg per cup, green tea about 30 mg. Compared to coffee, tea releases caffeine more slowly due to L-theanine, which modulates the stimulant effect producing more sustained energy with fewer spikes.