How much caffeine in 12 oz cup of coffee?

It's impossible to give you an exact caffeine amount for a 12 oz cup of coffee without more information. Here's why:

* Coffee bean type: Arabica beans have less caffeine than Robusta beans.

* Roast level: Darker roasts generally have less caffeine than lighter roasts.

* Brewing method: Different methods extract caffeine at different rates (French press has more caffeine than drip coffee).

* Coffee strength: A strong cup of coffee will have more caffeine than a weak one.

Here's a general range:

* A typical 12 oz cup of brewed coffee can contain anywhere from 80 to 180 mg of caffeine.

For a more accurate estimate, look at these sources:

* Coffee shop information: Most coffee shops list caffeine content for their specific drinks.

* Coffee bag packaging: Many coffee brands list caffeine content per serving.

* Online caffeine calculators: There are many online calculators that estimate caffeine based on brewing method, bean type, etc.

Remember: If you are sensitive to caffeine, start with a smaller amount and monitor your reaction.