A 32-oz Dr Pepper usually lands around 109 mg of caffeine, based on 41 mg per 12 oz and scaled up by volume.

A typical 20-ounce brewed coffee lands near 250–330 mg of caffeine, with real cups swinging lower or higher based on beans and brew style.

A full 2-liter bottle of Coca-Cola has about 192 mg of caffeine.

A U.S. 20-oz bottle of Coca-Cola Original contains 57 mg of caffeine.

A 16-ounce coffee often lands around 180–330 mg of caffeine, yet the real number swings with beans, grind, dose, and brew style.

A 12-ounce can of Coca-Cola contains 34 mg of caffeine, a modest dose next to coffee and most energy drinks.

An 8-fl-oz serving has about 23 mg of caffeine, based on Coca-Cola’s stated 34 mg per 12-oz can.

A standard black tea bag brewed into an 8-oz cup usually lands around 40–70 mg of caffeine, with steep time and water heat changing the final hit.

An 8-ounce mug of brewed green tea often lands near 30 mg of caffeine, with many cups falling between 20 and 45 mg.

Two tablespoons of ground coffee often brew into 60–120 mg of caffeine, depending on bean type, grind, and water.