Daily How Much

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.

A 20-oz coffee commonly has 200–300 mg caffeine, and some cups range 120–450 mg based on beans and brewing.

Two teaspoons of matcha made from 4 g of powder typically land around 76–178 mg of caffeine, depending on the powder and how full each spoon is.

An 8-fl-oz serving of Coca-Cola has about 23 mg of caffeine.

A 20-ounce bottle of Diet Coke has about 77 mg of caffeine when you scale the brand’s 12-oz figure to 20 oz.