A 12-ounce cup of brewed coffee contains approximately 113 to 247 mg of caffeine, according to the U.S. Food and Drug Administration.
The exact amount of caffeine in your cup of coffee will vary depending on the type of coffee you’re drinking, the size of your cup, how it’s prepared, and other factors.
Coffee and caffeine as part of healthy diets
Caffeine is just one of the more than 1,000 natural compounds found in coffee. Health and nutrition guidelines around the world generally conclude that drinking 2–3 cups (12 ounces each) of coffee per day (about 400 mg of caffeine) can be part of healthy diets.
These are general guidelines, but caffeine affects each person differently. Your own tolerance can be affected by your genes, your coffee drinking habits, and even your hormones, so some people are comfortable drinking more—or less. Remember that caffeine can be found in other foods and beverages as well, so be sure to consider all potential sources as you determine what’s best for you.
It’s also very important to note that guidelines on caffeine intake may vary for people with certain medical conditions—and that every person is different. To learn what’s right for your health, you should:
- Check health recommendations from recognized authorities
- Pay attention to how your body responds to caffeine
- Consult your healthcare provider
For people who want to limit caffeine intake, decaffeinated coffee can be a great option. Learn more about decaf coffee and how it’s decaffeinated.
If you’d like to take a deeper dive into the science of coffee and health, browse our research library.
All information presented is general and not intended as a substitute for individualized healthcare or advice. Please consult your healthcare provider about your personal health.
