The short answer
Caffeine varies by drink and serving. As a rough guide, an espresso shot has about 65 mg, an 8 oz brewed coffee around 95 to 135 mg, cold brew more, and black tea roughly 30 to 70 mg. These are approximate figures that change with bean, brew time and size. Use the estimator above to compare.
Interactive · Caffeine estimator
Estimated caffeine
~100 mg
These are approximate, typical figures and vary by bean, brew time and serving. For general guidance, many healthy adults treat about 400 mg a day as a common upper reference point. This is informational, not medical advice.
A clear, honest look at caffeine
Caffeine is one of the most common questions we hear, and the honest answer is that it depends. The numbers below are typical ranges, not exact promises, because so much comes down to the bean, the brew and the size of your cup.
Approximate amounts by drink
- Espresso: roughly 65 mg per single shot.
- Brewed or drip coffee: about 95 to 135 mg per 8 oz cup.
- Cold brew: often higher, commonly 100 to 200 mg per 8 oz, before dilution it is stronger still.
- Black and Adeni tea: roughly 30 to 70 mg per 8 oz.
- Matcha: roughly 40 to 70 mg per serving.
- Decaf coffee: a small amount, often around 2 to 15 mg per 8 oz.
What changes the number
Bean variety, roast, grind, brew time and serving size all shift the total. As a general reference point, many healthy adults treat about 400 mg a day as a common upper guide. This is informational only and not medical advice. If you have questions about your own intake, speak with a qualified professional.
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