Can you expect similar caffeine amounts from home-brewed coffee vs. a cup you pick up from a coffee shop? This article ...

In general, though, it's safe to assume that a standard cup of decaf coffee contains about 2-3 mg of caffeine. This should translate to very little per decaf espresso bean, but what constitutes a ...

It's a known fact that using different beans and ... drip coffee ranges from around 12 to 16 milligrams of caffeine per ounce. How much caffeine is in your morning cup is more complex.