A typical 8-oz mug brewed with Folgers lands near 90–120 mg of caffeine, with your scoop size and mug size doing most of the changing.

A typical 8-oz mug of black coffee lands around 80–100 mg of caffeine, with strength and brew method shifting that up or down.

A 12-oz brewed coffee often has 140–200 mg of caffeine, with bean type, dose, and brew style pushing it lower or higher.

An 8-oz cappuccino made with one espresso shot has about 65 mg of caffeine; double-shot cups often land near 130 mg.

A mug of hot cocoa often lands around 5–15 mg of caffeine, shaped by the cocoa amount, the mix, and your serving size.

A typical 8-oz cup of Coca-Cola has about 23 mg of caffeine, based on the 34 mg listed for a 12-oz can.

A typical 8-oz cup of chai made with black tea lands around 30–60 mg of caffeine, with strength, tea type, and recipe choices driving the swing.

Most Coca-Cola bottles land in the 45–60 mg range, with a 20 fl oz bottle at 57 mg on U.S. labels.

One 12-oz can of Diet Pepsi contains 35 mg of caffeine.

A standard 12-oz can of Pepsi has 38 mg of caffeine.