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A 12-oz cold brew often has 150–200 mg of caffeine, with some cups landing closer to 250 mg.

In many products, 100 mg of coffee fruit extract lands around 1–2 mg of caffeine, but labels can range from near-zero to triple digits.

A 12-oz can of Coca-Cola contains 34 mg of caffeine, a modest dose compared with most brewed coffee.

One level teaspoon of ground coffee usually holds 20–60 mg of caffeine, depending on bean type, roast, grind, and how tightly it’s packed.

A typical 10-oz brewed coffee lands around 120 mg of caffeine, yet a “same size” cup can swing from under 100 mg to over 200 mg.

Half a teaspoon of matcha lands near 20–45 mg of caffeine when the powder is close to 1 gram.

A typical 10-ounce brewed coffee lands around 95–150 mg of caffeine, with bean choice and brew strength driving the swing.

A level teaspoon of matcha often lands around 30–70 mg of caffeine, with the swing coming from powder weight, grade, and how it’s measured.

A level teaspoon of regular instant coffee powder has about 31 mg of caffeine, though a rounded spoon can land higher.

A single roasted coffee bean usually carries 1–3 mg of caffeine, with variety and bean size pushing it lower or higher.