Daily How Much

A 12-fl oz can has 41 mg of caffeine, and bigger bottles climb in direct proportion to the ounces you drink.

A 12-oz can of Pepsi contains about 38 mg of caffeine.

A standard 8-oz cup of black coffee often lands near 95 mg of caffeine, with brew style pushing it lower or higher.

A typical 8-oz brewed coffee has about 80–100 mg of caffeine, though brew method and bean choice can swing it wide.

A 12-oz Diet Coke has 46 mg of caffeine, and bigger servings rise with the ounces.

A 12-fl-oz Diet Pepsi contains 35 mg of caffeine, with larger bottles rising by size.

A standard cup of brewed tea usually lands between 15–70 mg of caffeine, depending on the tea type and how you brew it.

Most decaf coffee lands between about 2 and 15 mg of caffeine per 8-oz cup, not zero.

A typical 8-oz mug of brewed black tea lands around 40–70 mg of caffeine, with leaf style and steep time pushing it up or down.

A typical 8-oz mug of brewed green tea lands at 25–45 mg of caffeine, while matcha and long steeps can run higher.