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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.

An 8-ounce mug of brewed coffee often has about 95 mg of caffeine, with many cups landing between 60 and 160 mg.

A 20-fluid-ounce bottle of Coca-Cola contains about 57 mg of caffeine.

A 20-oz bottle of Coca-Cola has 57 mg of caffeine, a smaller dose than most coffee drinks.

Two tablespoons of ground coffee holds around 120–150 mg of caffeine, and your cup varies with bean type and brew.

An 8-oz cold brew typically has 150–250 mg of caffeine, with strength shifting by beans, steep time, grind, and dilution.